His announcement here today that both events will be awarded simultaneously during the International Olympic Committee (IOC) Session in Lima on September 13 had been more heavily trailed than a new Star Wars movie, so there was inevitably a sense of anti-climax about it. 

As ever with these sort of things, the devil will ultimately be in the detail. There was precious little of that during Bach's press conference here following the meeting of the IOC Executive Board, where the decision was taken to propose the radical plan to its members at another meeting in the Olympic Capital next month.

But, by dissecting Bach's words, it is fairly straightforward to work out what is going to happen during the run-up to and at the Session in Lima.

A 2024 Candidate City Briefing for IOC members in Lausanne was already in the diary for July 11 and 12, so little extra organisation will be required to re-badge that as an Extraordinary Session. That will allow IOC members to debate the idea and vote on it. 

Bach is not proposing a change to the Olympic Charter, so it will require just a simple majority, rather than two-thirds of the IOC members voting for it, to be approved. 

A few of those present will doubtless argue that it does require a change to the Rule 33.2 of the Olympic Charter, which says: "Save in exceptional circumstances, such election [for Olympic host cities] takes place seven years before the celebration of the Olympic Games."

They will probably be led by Richard Pound, the Canadian lawyer who has been a member of the IOC since 1978, making him the father of the house, but opposition will otherwise be minimal and Bach's proposal will be overwhelmingly accepted.

Formal negotiations can then begin with Los Angeles and Paris, the two cities bidding for the 2024 Olympics and Paralympics. Bach claimed here today that no official talks have been held so far. That is probably technically true, but Los Angeles Mayor Eric Garcetti told me during the IOC Evaluation Commission visit there last month that he had already spoken to his counterpart in Paris, Anne Hidalgo, informally about the idea.

Bach praised Los Angeles and Paris as "two such great cities, two such great countries, having two candidatures who are really enthusiastic".

It is widely assumed that Paris will be given the opportunity to go first, especially as they have stuck consistently to their line that they can host the Games only in 2024 because after that they will lose the land they are planning to build their Athletes' Village on in Saint-Denis. 

Los Angeles made a huge tactical error on Wednesday (June 7) when its chairman Casey Wasserman put out a press release claiming they are more interested in how best they could serve the "long-term needs of the Olympic and Paralympic Games".

It opened up publicly for the first time the prospect of them accepting the opportunity to stage the Olympic Games in 2028. 

Los Angeles insisted that they were not conceding anything to Paris 2024, but if you spoke to anyone in the lobby of the Palace Hotel connected with the Olympic Movement, including members of the IOC Executive Board, that is exactly how they interpreted Wasserman's statement. 

Garcetti has already indicated he may be willing to consider standing aside for Paris in 2024 if the IOC would help fund a multi-million dollar youth sports programme in Los Angeles. "You don't need to reward somebody if you give them a present," Bach replied when asked if there would be any financial incentive for the city chosen to host 2028. 

But this is the United States, where everything has a price, and Bach knows you don't get something for nothing. It is true that Los Angeles will be awarded the Games without having to commit itself to another expensive bid. But then the IOC will have the advantage of knowing it has secured the future of the Olympics in the short-term. They will be able to rely on a world-renowned city in he world's richest country where little expensive infrastructure will be need to be built. 

That stability could be worth hundreds of millions dollars to the IOC over the next decade as it negotiates television contracts and new sponsorship deals. 

So a compensation package will be worked out between the Californian city and the IOC, probably wrapped up as an Olympic grant. A special arrangement on marketing rights for Los Angeles 2028 will also be agreed to help sweeten the deal.

The last thing that will need to be established is how the voting will work in Lima. 

Members will be presented with two ballots, one for 2024 and another for 2028. Each ballot paper will contain the name of only one city. This has not been formally worked out yet. Bach, though, referred to this is a "win-win-win" situation with "no losers", a term which, strangely for a man who likes to think he leads world sport, he appears to find offensive. 

He will want to make it appear that everyone has won a gold medal. Members will vote first to agree Paris 2024 followed by another ballot for Los Angeles to host 2028. 

Bach claimed that Los Angeles and Paris are "two big birds in its hands" so he doesn't want to lose either of them. His biggest task during the next three months leading to Lima is to make sure there are not too many feathers ruffled so he can land a deal which may come to define his legacy as IOC President.