Definitely no accident here. The coma dream and the Holsten's scene both have an eerieness to them reminiscent of the Twilight Zone. And like I have said in several posts the original show was referenced several times during the series.dsweeney wrote:Interesting that you use the words "other worldly". In an interview Chase says that he believed Tony actually "went somewhere else" and that it wasn't just a dream-sequence per se.
If anything the "twist" at the end of the Sopranos is a homage to that classic show.