Hullo Nigel.
Thanks for the listen.
I must admit I was surprised at your comment for a number of reasons.
Did you listen to the latest one I put on Soundcloud the day before yesterday or was it an earlier version?
I thought at first it was my old ears filtering out the high frequencies but I found some artefacts (a bleed from the other tracks) in the first mix which took me a while to sort out.

There is no "chorus" but there are two bridges between the verses. Not standard format but I can't see why having two voices in a chorus would make them clearer.
Also The two voices aren't there continuously. They are on alternate lines in the verses (The "punch lines") as you say.

Once again I appreciate you taking the time to give input.

Vic