@voxl-phoenix J19 has pins for 2 UARTs. We put GNSS on one and RC on the other. So if you are able to hook up everything correctly, configure the TBS crossfire receiver correctly, and configure PX4 correctly then it should work.
Sounds good @voxl-phoenix ! Goodluck - the VOXL2 is radically easier to interface with due to ubuntu 18.04 being the OS vs yocto so my recommendation is to migrate to that if you have the ability - if not, let me know how the mavsdk side of things goes!
