There are some interesting articles discussing the place of the Gospel of Luke in relation to John and the other gospels:
I would prefer to take more time to explore literary relationships before going too far with the assumptions in these for oral traditions.
When I get time to digest some of these more, I would like to compare them with other studies that place Acts very late, and our canonical form of Luke also late. By late I mean the latter half of the second century, from the time of, or even very soon after, Justin Martyr. Continue reading “More on Luke Being the Last”