So basically you have make another Frontier account to link the Epic store version of Elite if you want a second cmdr?
Epic + Steam + Frontier account = same cmdr, but on Epic or Steam
Steam + Frontier account = cmdr1
Epic + 2nd Frontier account = cmdr2
Epic + Steam + Frontier account = same cmdr, but on Epic or Steam
Steam + Frontier account = cmdr1
Epic + 2nd Frontier account = cmdr2