It wouldn't surprise me. My adult night float started at 8pm while peds and OB night float started at 6.Our night float started at 5pm and my husband (and friends) didn't get home from work until after then. So no, we didn't ever have dinner together when I was on night float. Did your night float really not start until 8pm at night? Yes, I often got some sleep on night float, didn't make me hate it any less!
Like you when I was on the 6pm nights I never saw my wife even when she was on easy rotations because she'd be working 8a-530p and factoring in travel tie for us both.