Same pattern here, with one difference that may be worth adding: mine was
reviewed, then stalled.
My app was rejected July 16 under Guideline 2.1 (Information Needed) with four
questions. I answered all four in the Resolution Center the same day. It has
now been 18 days with no response and no status change. So a reply sitting in
an open thread appears to stall the same way a fresh submission does.
On the escalation path question, here is what I have tried and what each
produced:
- App Review contact form: two replies from Developer Support, both restating
the rejection and telling me to reply in the Resolution Center, which I had
already done. No status information.
- Phone: reached Developer Support twice. Both times they sent a note to the
App Review team. The second rep said plainly there is nothing further they
can do, and that they cannot see queue position at all.
- Phone, a third attempt: 2.5 hours on hold, never connected.
- Resolution Center: replied July 16, followed up July 22, and on July 30
requested a call with an Apple representative. That option is documented in
Apple's own "Tips for an efficient app review" post
(developer.apple.com/forums/thread/837575) - there is no button for it, you
simply ask in a reply. No response to any of them.
So the honest answer to "what is the appropriate escalation path" appears to
be that the paths exist, they are reachable, and none of them move the queue.