How to debug (using logs) code that interacts with USB serial?

[yanshay]

I want to develop some code that will communicate over serial with a pc.
However, to debug it, I also need to use logs which go out to serial.
Is there a way to have two serials working?

I have an esp32s3 board that has a USB connector and I also have for it a debug board that has another USB connector, they appear on different devices on my computer. I tried connecting both at the same time but as soon as I try to connect with espflash monitor to a second serial the first one disconnects (writes 'broken pipe').

So is there a way to get logs in some way while debugging serial communication?

[yanshay]

Found how to do that.
esp-println allows configuring using features whether to use jtag or uart, by default it decides automatically on its own and that caused a conflict.
Once I set it to not conflict with the serial I'm using for my app there is no longer a conflict and I can have both working together.