Reuse SeatalkHS for RayNet

I have 2 E80 Classics connected via a SeatalkHS cable (with RJ45s). I am replacing the E80s with Axioms. I want to reuse the current cable rather than trying to fish a new one from the upper to lower station. I see Raymarine offers a number of adapters for this purpose (I think A80247 is what I need).

Q1. The current SeatalkHS cable has a E55060 Crossover Coupler in the middle. Do I need to keep this coupler in-place when repurposing the cable for RayNet?

Note this cable will be the only RayNet cable I will have (Axiom-Axiom). There will be no switch involved.

Thanks in advance.