Or the contrivances involved in getting Silva to a specific briefing room at a specific time so he could specifically escape again in time for a train to drop in.
Plus ca change...
I don't think that's anything to do with the editing - I expect that was in the SF scenario from the start because they wanted to include the stuff left out from a prospective unused chase in OHMSS. My point is in TB there is already a reasonable time frame which runs:
meet Domino, Quist follows Bond to hotel, Bond assaults him, meets Leiter, Quist is killed by Largo, Bond meets Paula and Pinder and Q (Big Ben strikes 7), casino scene, underwater scene beneath the Disco.
But because they (Maibaum, Hopkins, Young, McClory) hadn't done the appropriate script revision to leave pointers in the dialogue (ie: when Big Ben needs to strike 7, why Bond visits the casino, why he's interested in the Disco Volante), they reversed the scenes so now Bond visits the casino before everything else. You can tell there was originally more to this whole sequence because at the casino, if your quick, you'll notice in the background a point when 007 is talking to Leiter before the audience even knows they've met !
I also understand that when Bond infiltrates Largo's villa there was meant to be a scene where he sees a set of wheeled tracks leading from the basement exit doors down a pathway to the inlet. This is the sort of detail which wouldn't slip past most modern writers / directors, although I think its fair to say they all make mistakes in most films somewhere.