How to connect two WAN routers

Hi,

I have two internet routers: one Huawaei (GigaCube) for LTE internet and an AVM Fritzbox for (slow) DSL connection.

I bought an MikroTik RouterBOARD 750r2, heX Lite device and want to use this as an “core router” for both of them.

Is that possible?

Thanks for your help…

Homeworkz

Look here, someone else happens to deal with the same task. There is a couple of useful links there.