playing on the direwolf2o pack I can't seem to get the advanced computer to listen to more than 1 channel.

I have an advanced computer transmitting on channel 1 and channel 2, however, the receiving computer will only seem to allow opening 1 channel at a time. disabling channel 1 allows channel 2's message to come through and vice versa. Both will not be received concurrently.

Try https://github.com/cc-tweaked/CC-Tweaked instead

I don't think original ComputerCraft is supported anymore...