I don't know what you mean, are you saying that the orb is the gate? if so, what we see is:
- The beam suddenly blasts through the barrier, and we see it flickering in and out while going past the sky orb.
- A blast hits one side of heaven's gate, is briefly stopped, but pierces through.
- We see the beam do some further flickering.
Which is not consistent with the orb being a portal to heaven, just because the beam wasn't already on the other side of the gate. I viewed the cut to the gate breaking as a brief rewind to what happened seconds earlier, from heaven's view. Since the beam had already passed through entirely.