Abc12345: The Mishna Brurah 233:14 says one should daven byechidis rather than daven after sunset.However, he says bdieved one could rely on those who argue on those hold only up to shkia.It comes out one could be meikel up until 20 min after shkia(he writes up until ??? ??? ??? ???.Rav Avigdor Nebontzal says if one does not hold ?”? for motzai shabbas then one can’t be somech on this because of ??? ??? ????? ?????.
AaronChaim: Rav Moshe already said that ?”? is preferred,isn’t that the litvishe?