Wifi DHCP and other Config on 5G Home Internet

@copz1998 regardless of which router (MR60 or eero 6+ mesh), was there anything special, in terms of settings, that you had to do with 1 router connected to another router.  I've honestly only done it with my Xfinity setup.  In that case I put the Xfinity router in "bridge mode", so it passed all DHCP work to my Amplifi Mesh router.  I take it I wouldn't have HAD to do that "bridge mode" based on what you are telling me.  Just plug and play? I assume I would just "hide" the SSID that the TM gateway was broadcasting, and then just connect to whatever 3rd party router I choose to connect to the gateway and voila?.  Hope the comments and questions make sense :)