Wireless Android Auto dongle project

Hello, i have a car that supports only wired Android Auto and Apple Car Play. I'm gonna make a wireless Android Auto dongle project with Raspberry Pi Zero W or Zero 2W and using this repo https://github.com/nisargjhaveri/WirelessAndroidAutoDongle. Here's my question: What would happen if I connect a cable that supplies both data and power to the only OTG port instead of Power port of my Raspberry Pi Zero W? In other words, how would powering the device through the OTG port instead of the Power port affect its operation? I don't want to be 2 seperate cable connection and cable clutter in my car.

From my own experience it works fine. I have accidentally connected the wrong port to the power supply and it has made no difference. The 5V and GND lines are common across the board.