Concatenate two VLOOKUP arrays

Question

I have two columns as arrays:
Column (A) = ArrayFormula(ifna(VLOOKUP(F2:F,Auditors!A:B,2,0)))
Column (B) = ArrayFormula(ifna(VLOOKUP(G2:G,Supervisor!A:B,2,0)))

The only way is to concatenate them and copy paste to the end of column, but I need help to concatenate them as a new array separated by ,:
A,B

Answer 1

Do you need concatenation like this?

=ArrayFormula(ifna(VLOOKUP(F2:F,Auditors!A:B,2,0) & ", " & VLOOKUP(G2:G,Supervisor!A:B,2,0)))