That's what I just said. The play clock runs but the game clock doesn't until the chains are set. So they can only run 30 seconds off instead of 40 seconds. Use a timeout on the next 3 plays instead.
I still can't believe that we were at the 1 yard libe with 2 dudes totalling a combined 20 rushing TDs this season and we didn't give either a chance to punch it in.