[Discussion] How does spleeter handle stereo files when training?

I'm creating a dataset for training my own model. At the moment my dataset is comprised of mono loops. I'm trying to figure out if I should be generating stereo but i don't know how Spleeter handles mono vs stereo. I've tried digging through the code but I'm a novice with Tensorflow and this is a complex project.

Does it train on a stereo wav or does it split the wav up into 2 mono wavs (Left & Right channels)?
If it uses both channels at once are they in context of one another? If I have sounds panned hard left & right does that matter?

If I have 1,000 stereo sets does it treat it as 2,000 examples or just 1,000?

Much appreciated..