comp or lpcomp for 2 analog inputs with different v-- (ref)

[ziv123]

i am working with nrf52832

i need to check 2 analog inputs and set my own v- (ref) 

i can have value read every few seconds so no fast readings needs to be done 

if i understand correctly i better use lpcomp if no fast readings is needed?

also,  is it possible, and if there are some code examples, to be reading 2 analog inputs with 2 different v-- (references) (one for each input pin) ?

best regards

Ziv