Connect AR6610T to Kakute H7 V2

I have tried everything I can possibly think of to get the thing working.
the SRXL2 connector is wired to the T6 pad and all parameters are configured
SERIAL6_PROTOCOL: 23 (RCIN)
SERIAL6_OPTIONS: 7 (Enable Half Duplex and Invert RX and TX pins)
SERIAL6_BAUD: 115 (115200 baud)