When does trail assume sideline responsibilities on a transition?

[ronny mulkey]

The manual is not very clear as to exactly when "new" trail assume sideline responsibilty. It uses verbage like "after determining sideline responsibility".

My questions are"

1. endline throw-in going length of court (no pressure) when does trail assume the sideline?

a. Immediately after handing ball to thrower?
b. Or, does lead assume responsibility until trail can get out to sideline?

2. endline throw-in going length of court (with pressure) when does trail assume sideline?

a. immediately after handing ball to thower
b. Or, does lead assume responsibilty until trail can get out to sideline?