Is it possible that you are considered to be present or "in attendance" at the Kingdom Hall, but you have to go there at the start of the meetings? Then afterwards, when the meeting is in session, you can sneak off to the parking lot. Sort of like "keeping up appearances" where it counts the most, and then when you get the chance, escape.
Kind of like high school kids who have to go to school and attend classes to avoid being marked "absent", but then after the attendance roles are taken, they skip out.
Rod P.