Yes it’s a ‘long 12’ format, if you get out before the clock it counts.
I soloed last year, self supported, and moving time on garmin was 11 1/4 hours for about 12:09 elapsed time. I could easily have shortened last couple of stops and ridden a bit harder and got another lap, but given the intent was to ‘ride’ for 12 hours almost irrespective of distance, extending to nearly 13 hours didn’t seem that obvious a choice to make. And in spite of that by the time I got into the beer tent the beer was gone anyway…..
Team of 3 this year; barbecues not bar ends will be order of the day.