By Andrew Gould The Tennessee Titans began Phase 1 of their offseason activities on Monday. As the AFC South champions begin work on defending last season’s No. 1 seed, they’ve yet to welcome back Ryan Tannehill. Per ESPN’s Turron Davenport, offseason acquisition Austin Hooper told reporters he hasn’t had an opportunity to work with his new quarterback yet. “Until he gets here, I’m just going to let him enjoy his time with family while I get in shape, get to know my teammates and the system in place here,” Hooper said. Tannehill doesn’t have to attend the voluntary workouts, which mostly focus…