First of all, I am currently using Lenovo's BCM94352Z M.2 NGFF WiFi/BT Combo card and macOS Catalina with the Latest versions of AirportBrcmFixup (version 2.0.3), Headkaze's Fork of BrcmPatchRAM (version 2.2.12), and RehabMan's FakePCIID kexts (Version 2018-1027 on Bitbucket / Attached the whole EFI folder). Plus, I can connect to WiFi network and can use Bluetooth file sharing without any problems.
However, I am not able to use Internet Sharing in the "Sharing" section of System...
Internet Sharing, AirDrop, and Sidecar via WiFi not working on Catalina
However, I am not able to use Internet Sharing in the "Sharing" section of System...
Internet Sharing, AirDrop, and Sidecar via WiFi not working on Catalina