"Hebrews 1:1 "last of all" is not there. Paul says in these "last days" which we now acknowledge continues to BEYOND Jesus second coming."
"This proves then that God will speak againthrough a single Human Temple at some point in the future after the first coming."
Heb 1:1,2 - God, who at various times and in various ways spoke in time past to the fathers in the prophets,has in these last days spoken to us in His Son, whom He has appointed heir of all things, through whom also He made the worlds;
continues to BEYOND -- has = Past tense, done and dusted, no beyond referenced in these passages = you are adding as has ppm
It proves nothing of a sort within these passages --- againthrough a single Human Temple.= Again you are adding.
What Paul shows by a number of verses, People will become the Temple and this also aligns with the John Ch 14 and 16 - Comforter, Spirit of truth = Father teaching all. Single Temple = Christ to which we are to built onto, part of and not some look alike, come another version of Christ.