Micro USB female to dual Micro usb male Audio cable?

[Mechrior]

Not sure if this is in the right forum but what I am trying to achieve is:

I have a FreedConn FX Motorcycle intercom, it has a micro USB connector which the headphones and mic plug into.

What I want is to plug the male end of the mic/phones, into a female port, then split that signal to the original female port on the headset, and also to either a 3.5mm TRRS, or micro usb to usb-c to plus into my Osmo Action 4 so that I can record my intercomm to the camera.

For those that would say use a recorder, it wont work as there is already not much space in my helmet for my big head, and that wont record to voices of the guys I ride with.

Any help in either sourcing a cable, or some hints/tip on maybe making something that would work would be amazing.

Thanks all!

[Kilrah]

They will be misusing the connector for not-usb and who knows what pinout they will be using... so you'll likely have to take the thing apart, measure, figure it out and build a cable yourself.