I rate this as 5/7 on Chuck's turn, with 2 other left turns completed successfully, for a total of 7/9.
#5 -> too long a gap (6:34->6:40), should have gone on the over 5 second gap. However, some would call this a success. Waiting too long actually got other drivers to start going around the ego car, arguably. Obviously some of that behavior would have happened anyway, but the red car looks like it was no longer confident that the ego car was going to take the next good opportunity.
#6 -> 7:28. Poked the nose out, then stopped, forced driver to go from #2 (??? - it's unclear) to #3 lane (wasn't even in the target lane (I think?) but something about the movement was disconcerting I guess...I'm assuming it wasn't in lane #1 otherwise Chuck would have disengaged). Anyway. Can't be indecisive like this; this would certainly result in a disengagement. Some would argue this was a success, but I don't see it that way since it should not poke and stop like that. Just wait for the oncoming traffic to pass the "safe point" then go. There was a large gap afterwards.
Actually better than I expected. I guess we'll see if he posts more and we'll get a bigger sample. Would have to go back and review, but it's actually very close to 90% I think.