ahhh okay. i understand your confusion. this is the first season where there are 2 head of households. both head of house holds get to nominate 2 people. the 2 head of households were frankie and caleb. they both voted 2 people to go home. the 4 people that got nominated competed in a challenge against each other. calebs nominations versus frankies nominations. the 2 people
frankie
put up won the competition so now he's not the HOH anymore. now
caleb
is the only hoh. the 2 people he put up are still up for elimination but they competed in a challenge so that one of them could remove their selves off the block.
donny
won. so now
caleb
has to pick someone else to be put up for elimination!