Do Persian Jews retain vowel length distinctions? Mainstream Persian seems to but some (though not all) of the little I can find on Judeo-Persian languages suggests that vowel length is not present.
In addition, קמץ גדול is evidently pronounced [ɔ] and פתח [a], but in mainstream Persian long a is [ɒː] and short a is [æ]. [ɔ] and [a] are closer to Tajik, and I have read that Judeo-Persian is a form of Tajik, but I can't see that being where Iran's Jews came from.
Correct me if I'm wrong, but in length-preserving Sephardi dialects, isn't פתח pronounced [aː] in open and/or stressed syllables thanks to lengthening that had happened by Tiberian times https://en.wikipedia.org/wiki/Biblical_Hebrew#Phonology? I can't see it ever being [ɔ] or [ɒː] in the Persian-speaking pronunciation. Of course, it's possible that such a realization for קמץ גדול was informed by the Tiberian notation.
What about חולם and קמץ קטן? Are they both [ɔ]? Both [o]? חולם [o] and קמץ קטן [ɔ]?