I would offer.
That parable was used as vision an inspiration that enters our flesh mind just like that of Elias with Moses . They were used to represent the two witnesses. . . the law and the prophets .
In effect just as in Luke 16 if they hear not the law and the prophets (sola scriptura) then neither will they believe if someone rose for the dead.
Elijah Simply a picture of the rapture the last day. Corrupted flesh and blood could never enter heaven, it return to dust.
His bones are somewhere just as Moses are they are both hid as a parable that compliment each other. .
Mark 9:4 And there appeared unto them Elias with Moses: and they were talking with Jesus.
We walk by faith that alone comes from hearing all things written in the law and the prophets. . . .not by sight as the Pagan foundation.
Peter the denier had that kind of idealism (faithless). When he spread a false oral tradition eulogizing dead flesh (John 21) . Jesus in response to that informs us that if every time he had to corrected the lies that tend to glory in the flesh the whole world would not be able to hold the books that could be written .
2 Corinthians 5:7 (For we walk by faith, not by sight