Using 'call phone' in gmail and Obi's GV simultaneously

[fbjd]

I know most people recommend having a separate gmail/GV acct for use with the Obi. Can somebody explain what happens if I don't, ie. same GV acct on Obi  and I use it while logged in to gmail?

[Stewart]

I believe that you can make calls on both, simultaneous indpendent calls are even possible, but Gmail hijacks the registration and the OBi is unable to receive a call.