You only count the time that the client is talking on the phone? Sounds like you are trying to CYA. If that's the case all companies are 4-5 minutes. Any extra time spent on the phone with the PHI is time you could have spent selling someone else.
I like the PHI because it helps the agent should a contestable claim occur (no he said-she said), and also because in most cases you get an immediate decision. I DON'T like to spend 30 minutes on the phone doing a husband/wife, or any time that is more than necessary.
CYA, what the hell are you talking about? It is what it is and I like the PHI for the very reasons you mentioned, which I should point out is a clear case you you covering your ass - "I like the PHI because it helps the agent should a contestable claim occur (no he said-she said)"
Im not CMA at all, look, if you are so worried about the time it takes for a PHI, then write a company that doesnt require one, good grief.