re: Guesstimate the highest number of consecutive plays a defensive player was...

Arkansas defended 814 plays last year. That is 67.8 a game or 16.95 a quarter.

Also, Arkansas gave up 266 first downs. Obviously there is a break after each first down. That is 22.16 breaks a game for a 1st down or 5.54 a quarter.

So just for 1st downs, Arkansas players got a break roughly every three plays.