AC70: Combining two XT60 inputs

I have an AC70 in my car that is being charged by solar panel and the car charging cable. I would love to connect both charging sources without having to switch the plug all the time - but the AC70 only have one XT60 DC input port.

Is there a simple workaround to combine the car charging cable and solar panel cable into 1 plug? So they are either combined or switching between each other, depending on which one is providing power.

I would prefer a somewhat simple option although that might be a tall ask. But I would appreciate any tips and tricks you have :slight_smile:

Thanks a lot!