I played through KOTET on my main when it was first released and did not know at the time that Arcann was a companion option if you made certain story choices. I saw today that he can be obtained, but I don't know if it is possible to obtain him on my main since I already played through it once. I did replay chapter 1 and 6 in story mode and made the correct decisions, but it did not give me the choice to have him join me. Do I need to replay all of the chapters (not skipping from 1 to 6), or am I not able to obtain him now?