Siyi FT24, FM30 and connection for FR to Pixhawk 6C

It has probably been discussed here but anyways I have been away from RC for quite a while but took on a project where I am building a “V” wing pusher, Talon 1400 and I want to use the Siyi combination for long range while still having the ability to program the Pixhawk for autonomous flight. I have seen a lot discussion about using the above combination but no one has come out and shown exactly how the FR is connected to the Pixhawk. Is there anyone out there that has actually used this combination with the same outcomes that I am looking for and what is their success. If so could they provide precise diagrams with pinouts showing the connections. I also understand that there might be a couple of ways of doing it, one would be a direct hardwire and I also heard that using only Tx and Rx plus bluetooth also works. Please help as the manufacturers can’t seem to do so. Thank you in advance.