Did not our heart burn - while he talked - opened. (οὐχὶ ἡ καρδία ἡμῶν καιομένη ἦν - ὡς ἐλάλει - διήνοιγεν)
The A. V., as usual, pays no attention to the graphic imperfects here. They are speaking of something which was in progress: “was not our heart burning (finite verb and participle) while he was speaking, and was opening the scriptures?”