Commissioning of the network installation

I don't mind the quoting

Question: does the FritzBox have a normal RJ45 socket as a DSL input?
Then one/I could connect directly from the TAE socket to the patch panel with a TAE->RJ45 cable at the front. At the back, patch the two living room CAT7 cables accordingly and then go to the switch.

The FB in the living room could disappear in a cabinet. The cabinet is certainly more "permeable" than two sand-lime brick walls.

As far as I know, most Fritzboxes can be configured in the menu so that they can be connected via LAN 1 to another router (possibly via a switch).

With us, the Fritzbox is directly behind the cable modem, internet is supplied via a LAN port. And we also have the 7390, it's on the server cabinet. I'm currently considering external antennas, but you can also just put a router in the living room, which is even cheaper. And putting the Fritzbox in the living room only works if the phone cable is there as well (at least if the phone also runs through the Fritzbox and you still have a regular phone).

And Fritzbox can only go to the living room if the phone cable is also there (at least if the phone also runs through the Fritzbox and you still have a normal phone).

Couldn't that TAE cable be routed to the living room (network socket) via an RJ45 plug over the patch panel? Connect the FB to the left socket - the LAN output into the second socket and thus back into the utility room?

I don't know. I've been drawing all the time to try to imagine it.

Of course you can do that...

He says the FritzBox should preferably also be located in the utility room, so centrally with the other network devices.

Why?