The founder of the Triratna Buddhist Community, Sangharaskshita, stated that he thinks stream entry is realistic after twenty or thirty years
In fact, it would be surprising if, after 20 or 30 years of life in the Order, you were not a Stream Entrant. It would seem to be very surprising, if you have done all the other things - maybe you have founded Centres and written books and given so many lectures and gone on so many retreats, that you were not a Stream Entrant: why not?
It's obviously a very bold statement. Does anyone else give that kind of timescale for stream entry or do any modern traditions give any kind of timescale at all. Or is Sangharaskshita a complete outlier with this kind of estimation.
Note: Tiratna is my Sangha which I think is right to acknowledge in the question. That said it doesn't stop me finding some of Sangharaskshita's statements bold or even controversial and I'm always interested on outside perspectives on his statements.