All quarterbacks are allowed to communicate with their coach up until there are 15 seconds left on the play clock .
The Steelers use not one , but two quarterbacks , which means quarterbacks get not one , but two hearing devices on the field .
All quarterbacks are allowed to communicate with their coach up until there are 15 seconds left on the play clock , but the Steelers use not one , but two quarterbacks , which means they get not one , but two hearing devices on the field .