To clarify, I have an Obi100 with only 2 SP's.
I have 2 GV numbers and use the primary on SP1 (which is also the default for outgoing calls), and the second GV number on SP2. The incoming "forwarding" line for SP1 is Gchat, so fully GV. The incoming SP2 is forwarded from GV to CC for CName and then to the Obi.
So, normally, when I pickup and dial, the outgoing call is placed directly via GV and it uses my primary GV phone number as the caller id. Sometimes, I want to dial out from my second GV number and display that one. How I do it now is to go into my GV web page for line 2 and use the "call" button. It calls me back and places the call, appearing to come from the second GV number. If I were to make the second number directly connected to Gchat, and thereby use the phone handset to dial out (say, using **2), it would work just like my primary number, but then I could not use CC concurrently on SP2, and would lose incoming caller name.
As long as I have SP2 configured for incoming calls via CC, I have only 2 ways to dial out from my 2nd GV number: 1. use the web page 2. call the GV number from an outside line and wait for Kiki to answer GV, then use option 2 to place a call. Kiki responds to almost any standard phone I have tried, but does not seem to like VOIP phone dialers, and does not recognize my Obi handset dialer. I have tried using hangouts dialer from a smart phone, and Kiki hears the * at the beginning, but doesn't get the number key sequence right, possibly because of latency. But at least it hears the *.
The reason I would want to ever do this, is the occasional time when it is not convenient to walk over to the computer to place a call, but I would like to use the second number as the outgoing display. Therefore, I would put up with the hassle of dialing approx. 25 digits once in a while and following all the prompts bc at least I could do it from the remote handset, the few times it would happen.
TL;DR
I want CC for incoming calls and CNAM all the time. I want to use the GV number associated with CC for outgoing calls some of the time.