F750 gs comms issue

Anyone able to cast any thoughts on this please - in girl speak please!!

I have an F750 gs with TFT screen and bmw navigator vi . I also have a cardo freecom 2+ comms installed in my helmet and my iphone attached too.
Is this system unable to connect with all the above at the same time? If I leave the nav at home it seems fine but put that on for the full all gear no idea look it confuses the hell out of me and the comms so end up jabbing at the phone with my non screen friendly gloves.

Any advice welcome seems tho, thanks to king boris, I've now got some time to figure it out.

Thanks all
Miri

I've now had 3 bikes with the TFT and have been able to connect bike/iPhone/helmet/Nav VI OK. You connect the phone to the TFT and then the helmet to the TFT. Then connect the Nav VI to the helmet second channel. There is a useful Facebook group about this and a video guide to setting it all up.

Awesome , thank you .