I know you all may think I'm silly/immature but I swear I'm a grown woman in her 30s (but maybe a hormonal one)
Husband and I gave baby son a bath and every night he goes to bed first due to being up very early for work. I came downstairs with baby to feed him and after an hour I realised he got into bed and never said goodnight.
Every night he says goodnight to us both and is very affectionate. Normally says have lovely dreams, gives son a kiss and checks I have everything for the rest of the evening with baby. Baby was quite upset after bath so he would have heard baby crying downstairs.
Tonight.....nothing. He's clearly forgotten.