I have two internet lines (one 1gig, another 0.3 gig) coming into ports in an awkward part of the house and the walls are solid brick so hard to run cables through, especially as no plans to redecorate anytime soon. I am load balancing with a TP Link router 7206, a pihole and some switches going on.

I could run one ethernet cable to a spot that is much better for my stack. Does anybody know if I could cable the two internet supplier modems (currently on pass through mode directly to my router) to an unmanaged 5 port switch along with another long Ethernet cable to the router instead? Would this cause any speed issues?

I could just try it to see if it works but am wondering if I might miss something causing problems later down the line or a better solution as I’m fairly new to modern networking.

Thanks in advance!