[ It's not satisfying to hear, but there would be nothing that could satisfy him: the damage done is still raw in him, and he has plenty of emotional harrumphing he wants to give left in him, even though he knows better to go on and on, and not just because of Komaeda's question. ]

Business? ...Mmm. [ Did he know anything? He made that monument for Simpathis, but...

... --Ah. ]

He was there when the Arehtei told everyone about Simpathis, with Kylo Ren. He was talking with Sosyne. [ ... ] He asked her who Simpathis at that time.

He then made a monument for Simpathis in the mountains, and invited Sosyne to see it.

[ That was about all of Obi-Wan's business with the Arehtei he knew of. ]