[rei]

just to add to this...
most spirit guides are multidimensional, so they can have, basically, an infinite number of 'aspects' - entire expressions of themselves - in several 'places' and 'moments' simultaneously.

so even when your primary guide is working with you, that guide could still be working with several others at the same moment.

as Holistic Star said, in my own experience, my primary guide speaks on behalf of the others. then, if i specifically want to interact with the others, i call on them specifically and the different energy involved is how i know the difference.

p.s. everyone is connected to everyone else, but i'm with Holistic on the issue of a type of 'special' or specific connection to those who work with the same guides. usually if we are in the same soul group or monadic group, we find out by interacting with the person, not so much just from sharing the same guide(s).