Everyone has their own way of calling bird, so this is just my opinion on it. When your set up and strike a bird with a call, I use that call to bring him to the barrel, no matter what call it is. That's why we practice so much with our calls, it's not just to be good at calling, it's more to learn to be sufficient with running each call. Learn how to control it, how to make it sing, how to run it softly, everything you may need to do with it to seal the deal on a bird. With that said, if I'm sitting there runninng calls, which ever call I get that bird to strike with is the call I'm using to finish him off with. I don't like switching calls half way through a bird. That bird answered that call because something triggered him to, the sound, the pitch, the tone, and if you switch calls for whatever reasons you run the risk of that bird not liking what you switched to? Even though your better running a different call, that bird liked what that call said to him and the way it said it, switching may send that bird a different direction? Even though a call may sound very closely the same to our ears, that bird can tell the difference, that's why he answered that call and not one of the other calls you may have run.
If that bird won't respond to hen talk, I'll switch up and run gobbler or jake talk at him to see if he'll respond to that first before I try hen talking him to death. If he still won't respond, then I'll get more aggressive with my hen talk and may throw some gobbler talk in with it. If he still won't respond, then it's time to try him from a different angle, relocate and see how he responds to that? If not than try whatever you want to, your not out anything, he won't respond to anything you've tried so you have nothing to loose.