Filter 2 columns into one

[KerahJoy]

I'm looking for a filter formula that combines 2 columns and filters & sorts them into one.

[AliGW]

Try this:

=LET(v,VSTACK(column_1,column_2),SORT(FILTER(v,v=criterion)))

The above can be refined.

[KerahJoy]

I posted this twice since the first appeared to not take. Thanks Ali again.

[AliGW]

It’s not the same, so I let it go, but you could have asked both in the same thread!