For as long as possible:

From 0:00-3:00
2 rounds of:
10 overhead squats, 95 / 65 lb.
10 chest-to-bar pull-ups

From 3:00-6:00
2 rounds of:
12 overhead squats, 95 / 65 lb.
12 chest-to-bar pull-ups

From 6:00-9:00
2 rounds of:
14 overhead squats, 95 / 65 lb.
14 chest-to-bar pull-ups

Etc., following same pattern