This root form (lemma) is used in 2 different forms in the NT: συγκαθισάντων (PAA·GMP), συνεκάθισεν (IAA3··S).
It is glossed in 2 different ways: ‘having sat_together’, ‘he sat_together us’.
OET LUKE 22:55 Greek word=συγκαθισάντων (sugkathisantōn) Morphology=PAA·GMP English gloss=‘having sat_together’ SR GNT LUKE 22:55 word 14
OET EPH 2:6 Greek word=συνεκάθισεν (sunekathisen) Morphology=IAA3··S English gloss=‘he sat_together us’ SR GNT EPH 2:6 word 4