After watching this video I am still thoroughly unconvinced that Canon has solved their overheating problem with the R6II. Yes it did better than the R6 but that's not saying much. The R6II overheated at 4K60FPS in 40min with ambient temps at only 70F.
For the brief time I owned the R6 (3 days), it was shutting off around the 9min mark while just shooting a few video clips, scrolling through the menus, and taking a few pictures; and that wasn't even in direct sunlight or one of the hotter days here.
I live in one of the hottest most humid states in the USA, no way would it last 40min at 98F and 100% humidity. I have managed to get an overheat warning with a C200 and the fan set on high while filming, so heat management is probably more important to me than to people who live in a colder climate.
The R7 on the other hand has never gone past 3bars for me even when shooting in 105F degree temps with a mixture of 4K Fine, 4K 60FPS, and some photos/menu settings thrown in. The C70 also has never given me an overheating warning. So at the end of the day the R6II does have better specs in every area than the R7, but for where I live and the type of work I do, I will take a crop and line skipping any day vs a camera that overheats. I think the smaller sensor of the C70 and R7 really pay off when it comes to heat management.
Interestingly enough, I have a diehard Sony shooter friend who lives nearby and she just got the A7IV and she said it overheated in the middle of a wedding within a month of her owning it; so its definitely not just Canon with this problem. BTW, that wasn't even the hottest month here, no idea what she is going to do for next summer.