I have already asked a question on a related site, concerning a possible inter-textual connection between two passages of Daniel (5:30-6:2 and 9:25-26), inquiring whether Jewish sages, specifically, have ever commented on the subject, and which remained unanswered, despite having been put up for bounty. I would like to ask a similar question on this site, but relating to patristic and/or scholarly commentaries on the same topic; however, I am unsure as to whether I would be allowed to do so, or whether it would constitute a breech of site policy concerning duplicates, which is why I am using this opportunity, and asking the community to weigh in on my dilemma.
I don't see any problem with this. Questions across different sites are not usually considered duplicates as long as they are tailored to ask something specific tailored to the subject matter/expertise of each site.
The only really issue here is whether the question you want to ask is really better aimed at this site (is your goal reviewing the actual textual analysis, including academic or other contemporary hermeneutics, whether that be sourced from commentary or wherever?) or at Christianity (is your goal to review patristic history, traditions, etc.?). It's even possible you want to follow leads in both directions, in which case I would encourage asking specific questions on both sites tailored to the site scope of each.