2 plants 1 pot

they will compete with each other.. usualyl 1 sufferes more than the other. unless the pot is absolutely huge, it's a bad idea. zero benefit from it.

Yep, multiple times. Minimum pot size I used was 30 litre. Best pot size was 50 (8oz/plant). Can get very crowded though.

I remember there was a guy who did a diary on here doing just that a few years ago. He did it by accident with two fastbuds seeds if memory serves correct. It worked, but wasn't worth it. One plant developed earlier than the other and the yield was no different than growing single plants in a pot.

doable, but not a good idea in most case and with most pots roots and leaves will soon compete to each others, size and shape of pots do impact the previous statement