sageYou will have those moments sometimes, but the most statistically likely thing to happen will be that the winning keeps winning, so you're just delaying the resolution. It can have cool moments but at the end of the day its just kinda making matches longer and delaying the resolution of a match. You can have a comeback within the 30 minute timelimit just the same as you can have it during overtime, its as if we went "but what if we had a 60 minute timelimit" because sometimes teams manage a comeback on those extra 30 minutes.
imo calling it a 60 minute time limit is a stretch when most matches on the config are resolved in ~40 minutes or less, in line with average competitive koth match length. So in exchange for up to 10 minute longer games, you get more interesting games (both with the real comeback potential outside of rolls and the lack of dead time.)
I think the mention of a forced half time is interesting, I think instead of an unexec teams could play to reset with it might be better to have an extra 5/10 minute pause, and the condition could be something like next round won after infinite overtime or after 35 minutes with both teams agreeing and forced by one team after 45 minutes if not previously taken or mutually waived. (This way teams do still get their break either in a common gamestate for pauses, or can elect to take it early the same way an unpause is called by teams, and to prevent one team from forcing the other to play continuously for an hour+ it can be taken as a longer pause after another few minutes). Though I think a weakness of this is it makes longer matches more likely, either because there's no fatigue factor or just because an extra 5 minutes is an extra 5 minutes.