I don’t know official teaching, but the line in Hebrews about you have come to the assembly of the firstborn ...and the spirits of just men made perfect”
Hebrews 12:23 but cut-n-paste isn’t working in my phone.
Try BibleHub and the King James Version.
He conquered death, and they are made perfect (therefore their prayers are listened to, as it says in 1 John “if we ask anything according to His Will He hears us”.
Seems to me it kinda follows, at that point.
Thank you, but I’m not drawing that line.
Especially asking the departed to pray for the living. That Biblical to you?