Thank you. I think that's the answer. She freaks and tries to strangle herself with the fabric slip collar (always has) but is fine with the metal one so I'll use that with the connector.
It's just that no matter what you use for a backup and connector - there will be a decreased response on the quick pop function of the HS. Been there, done that with several back up collars on connectors. The regular old fashioned metal link choke collar has the most minimal though. Thanks:)
We used a large link Fursaver (like a regular slip collar but with BIG links) as a backup to the prong - worked great and no impact whatsoever to the correction with the prong when needed. Probably doesn't make a big difference what you use as a backup to prong as long as the connection piece is long enough.