Import data from one sheet to “only one cell” in another sheet

Question

I have 3 columns with variable data below them. I need to import all 3 columns in this format "A <> B -- (C)" to one singular cell. I have not the slightest clue how to do this. I found a question that was similar to this but I can't make heads or tales of the formula.

=JOIN(CHAR(10),QUERY(TRANSPOSE(IMPORTRANGE("SpreadsheetID",A2:C100)),,2e6))

Answer 1

like this:

=ARRAYFORMULA(TEXTJOIN(CHAR(10), 1, 
 TRANSPOSE(QUERY(TRANSPOSE(IF(A2:C<>"", A2:C, )),,999^99))))

or this:

=ARRAYFORMULA(TEXTJOIN(CHAR(10), 1, 
 TRANSPOSE(QUERY(TRANSPOSE(IF(A2:A<>"", A2:A&" <> "&B2:B&" -- ("&C2:C&")", )),,999^99))))