Help with Index/Match

Hello! I am trying to put together a formula that I could use some help on. I have 2 different sheets, Boarding Passes and Open Cases. In Open Cases, I have a Case Number. In Boarding Passes, I have a Case Number(s) field that could reference more than one of the case numbers in Open Cases (these should be separated by a comma).

I am trying to build a formula that will look for the Case Number from Open Cases within the Case Number(s) field in the Boarding Passes sheet and return a field to me. I have tried different versions of IF, CONTAINS, VLOOKUP, INDEX/MATCH. Below is the closest I was able to get without causing an error, but it is still not matching correctly to bring the value I need.

=IFERROR(INDEX({Boarding Pass Requests Range 1}, MATCH([Case Number]@row, {Boarding Pass Requests Range 1}, 0), 45), "")

I need to be able to do a wildcard match of some kind. Is that possible?

Any help would be appreciated.


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