Mark 9:4

Καὶ ὤφθη αὐτοῖς Ἠλίας σὺν Μωσῇ, καὶ ἦσαν συλλαλοῦντες τῷ Ἰησοῦ.

RBT Translation:

σὺν syn - synced/united

And He Is God ("Elijah") was perceived by themselves united with Drawn Out ("Moses"), and they were being those who are uttering together with the Salvation.

συλλαλοῦντες - uttering together

Julia Smith Literal 1876 Translation:
And Elias was seen to them, with Moses: and they were speaking together with Jesus.

LITV Translation:
And Elijah with Moses was seen by them, and they were speaking with Jesus.