Where you join a live ride it's entirely up to the person who created the session. If I stop pedalling at any point during the warm up the countdown timer would start. Only way to not catch people out is to let it run for the full 10 minutes. Usually works well so I've now learnt after tonight's mishap to do a test of the session well in advance of 7!its one of those things..no apology necessary! ....but was the modus operandi right? be on the sim @1900 then press go? does it hold all riders to start at the same time or does each rider begin the ride when pressing go and it relies on the timing of the button press?