YOU SAID:
My father is eating an apple while I am watching TV and my brother is sleeping
INTO JAPANESE
テレビを見ながら、兄が寝ている間に、父はリンゴを食べています
BACK INTO ENGLISH
Father is eating an apple while his brother is sleeping while watching TV
INTO JAPANESE
テレビを見ながら兄が寝ている間に父親がリンゴを食べている
BACK INTO ENGLISH
Father is eating an apple while his brother is sleeping while watching TV
You've done this before, haven't you.