Player collision when Loose Puck Deking

I have found multiple instances where I am deking out a defender using a loose puck deke. These are the dekes where the puck is actually taken off your stick temporarily to evade the defender. The problem I have seen with these dekes is that in my experience, they will never incur a tripping penalty when poking someone during the deke. The trip can only occur either before it is released from the stick or after when it is caught by the stick. In my curiosity, I decided to swing the stick around at non puck carriers and noticed that it was impossible to trip someone who didn't have the puck which I assume was intentional. What I am wondering is if, because of this collision logic, it is impossible to trip someone who is mid deke, provided they are doing a loose puck deke where the puck is no longer on their stick? 

I have provided two examples of one where the puck is behind my player as he is poking and goes right across my skate to hit the puck without incurring a penalty. One of which the guy is skating in the opposite direction of the poke so clearly hitting my skate first and yet neither of these are a trip.

Any information regarding the collision logic for dekes or tripping so I can better understand this very complex aspect of the game as it really is complicated but an underutilized art, would be appreciated. Thank you!