Just aquired a set of AC1200. I was under the impression from the vendor that I could connect both units to my existing provider's WIFI router, keep that router on and transmitting WIFI, and connect each AC1200 as a AP. This would mean I loose mesh capabilities. Now it seems that I can only connect the first AC1200 to the router and that the second one has to connect to the first AC1200. My problem here is that they are too far away for efficient mesh over WIFI, and there is no cable run between them since the route from my current provider's router to the first AC unit is being used to connect that unit to said provider's router. So I have no cable run back that I could use.

Suggestions? Or do I have to return the AC1200 back to the shop?