Help, can't run rear dash cam through rubber boot conduit, is it necessary?

That's what I had to do in the end, it looks an eyesore and not as flush as I'd like it but now I have a new issue. I need a short cable go in between the long cable and the rear dash cam cable so I can't see the connections in my rear view mirror, if you know what I mean, I can see the two connections just poking out of my headliner, and would like to tuck them further in.

I had it pulled through eventually only to realise it had nowhere else to go as my boot door is all metal unlike other boot doors I watched on YouTube who had headliners and plastic mouldings covering the holes to the window. You can see it had nowhere to go by looking at where I've circled it.