Accumulators can overlap. Annikian asked us to think about this a while back and today I found in 6-M-1, the last sentence:
"Increase Overlap to increase thrust - decrease Overlap to increase Velocity.
I know a hitter releases accumulators simultaneously and a swinger sequentially. Can a Swinger increase overlapping? Do the words increase and decrease that Homer wrote, apply that both strokes can increase or decrease the overlapping of accumulators?