look okay buck's whole arc this season has been about fatherhood in some sense or other and i can't stop thinking about buck's dreaming having no one but his biological family in it but christopher. like towards the end of the episode buck hears this kid crying and he's all alone so he goes up and asks him what's wrong and chris is like "i just want my dad" so buck offers to help find him and he's asking about him but chris keeps giving really cryptic answers like "he's got a lightning scar like harry potter" and "he won't wake up, why won't he wake up" which is when buck wakes up to find christopher crying at his bedside in eddie's arms and buck thinks back to the last time chris was being discussed in a hospital room and he meets eddie's eyes and suddenly everything makes a lot more sense