Not in acrobat.
Well I am not limited to acrobat if you know a way. Also if there is engineering staff on this forum. This seems like a feature that should be built in. Radio buttons are about the most frustrating fields to work with. I should be able to select a bunch of radio buttons and hit a button to combine them into one group.
If the field names are consistent I believe it can be done in Acrobat, using a custom-made script.
Feel free to contact me privately to discuss it in more detail.