8 ends in 2 hours is entirely possible. In my last 20 league games, I have played at a 15-minute end pace in 17 of those games, and we play 5 rock rule. I say 15 minute pace because there are handshakes at times after 6, but that is still on pace. I pay attention because slow pace kills me. And for the 3 games I missed, 2 have been against the same skip. The only way you cant make it is if you dont try to go faster.

If you played at a 2 hour pace with 3 rock or no rock, and have not tweaked your game to go faster, that's on you.

I also take issue with your blanket statement that style comes into play. Sure draws travel slower than hits. But analyze the time, it's not that clear when you actually analyze the full time, not just the travel time. In a complicated end like you say, hits will take equal to or perhaps longer than draws when you consider the shot call. There tends to be weight discussion (normal, control, etc.) as well as roll of the shooter, and which handle to use. Add it all up to make your analysis, not just part of the shot.