Join 2 collections into 1 gallery

Question

How can I join 2 collection into 1 gallery without making 3th collection? I want to filter 2 collection and display the result in one gallery and each time one of the collection will be changed  so it update it also in that gallery. If
I would join the 2 collection into one collection and display that in a gallery, it wouldn't update it if I would change something in one of the gallery.
Thanks

Answer 1

OK, sorry to hear it won't work for you.   Although this may be helpful for someone else, so I'll add a brief description of what they would want to do.
To collect the two collections into one, and have them be actionable:
Collect(Collection3, AddColumns(Collection1, "From", "Col1"), AddColumns(Collection2, "From", "Col2"))
This will add Collection1 to Collection3, and add a column to it with the value of Col1 in each record.   Then it does the same for Collection2, but adds Col2 to each record instead.
Then, when you want to update a collection, just use an If statement.
Assuming the Unique Record Identifier is called UIR in each collection.
Assuming you want to remove the record from the collection using OnSelect.
If(ThisItem!From = "Col1", RemoveIf(Collection1, UIR = ThisItem!UIR), If(ThisItem!From = "Col2", RemoveIf(Collection2, UIR = ThisItem!UIR))); Clear(Collection3); Collect(Collection3, AddColumns(Collection1, "From", "Col1"), AddColumns(Collection2, "From",
"Col2"))
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-Bruton