Question about Port-channel and vlan tagging

Sorry if this belongs somewhere else.

I was under the impression that I always needed to allow a VLAN on a port-channel.

I think is this not true.

I could just create a port-channel and assigned it to VLAN, correct? (Same as an access port)

So, let’s say I create a port-channel and assign it to VLAN 10 (SwitchA)

Will this port-channel ‘connect’ to a port-channel on SwicthB if this one is assigned to VLAN20 ?

Thanks