In watching the Gary Lam video clips one of the skills I saw him demonstrate was: Forward thought progression.
So what they is that?
When we are surprised we may have to have some absorption before we gain the upper hand.
So how does this differ from “going backwards?”
For one thing the absorption is done in a manner to gain a strategically advantaged position.
The second point is that it is done with “Forward thought progression.”
Oooohh fancy words.

Picture two pieces of board pressed together so that they can act like one board.
We take them and we push a body of water with them.
IF the body of water rushes away and continues to move away, then we could separate the two boards and the water would NOT flow between them because it is moving away.
However, if as the board is pushing the water something is on the other side providing just enough pressure to keep the water pressing up against the board as it moves along THEN the instant the boards separate the water will rush into that crack.
This is forward thought progression.
Even as you wave backwards to absorb and avoid an ambush attack your mind is pressing forward and will fill in any crack to assume the attack.
If you watch the Gary Lam video clips you can “feel’ his mind is pressing foreword allowing him to easily assume the attack even after a passive first parry.