You can cascade several Mesh Repeaters in the Mesh. This type of cascading makes it possible for you to extend your home network in a specific direction beyond the Wi-Fi range of a Mesh Repeater.
This means that not only can you connect your FRITZ!Repeater with the FRITZ!Box (Mesh Master), you can also connect it with an already existing Mesh Repeater. It does not matter whether the Mesh Repeater is another FRITZ!Repeater, a FRITZ!Box, or a FRITZ!Powerline adapter.
> https://pl.avm.de/faqs/connecting-the-fritzrepeater-with-the-mesh-repeater/
Which FRITZ! products support Mesh?Mesh with FRITZ! is supported by all current FRITZ! products and many older ones. This overview shows you which FRITZ! products support Mesh. FRITZ! products that are not listed in this overview do not support Mesh.1 FRITZ!Box FRITZ!BoxOperation as a Mesh MasterOperation as a Mesh Repeater FRITZ!Box 7590 AX ✔ only with a network cable ¹ FRITZ!Box 7590 ✔ ✔ ...
> https://pl.avm.de/serwis/baza-wiedzy/dok/FRITZ-Box-7590/3361_Which-FRITZ-products-support-Mesh/