としたところで/としたって/にしたところで/にしたって => Even if; Even supposing that ~ N1
いらっしゃる => to be; to come; to go (polite version) N4
てもよろしいでしょうか => May I... N4
Allow
じゃありませんでした => was not, were not N5
Emphasize negative meaning
でしょう/だろう => right?, isn't it?, correct? N4
~じゃ(では)あるまいし => isn't it; I wonder if it's not ~ N1
Invite and advise
むしろ => rather; instead N2
Compare
んじゃなかったか => shouldn't have... N4
Regret
じゃ(あ) / では => Then, so (Expressing attitude) N5
Change the way you speak
としたところで、としたって => Even from the perspective of A; Even in the case of A N1
Considering/ Concerning
じゃ(あ) / では => then; well; so; well then N5
Change the way you speak
... ところで => Even though N2
Evaluate