Complex sentence: There was a revival from 1940, when it was reconstituted and regular worship recommenced, and the congregation still met as late as 1996, but in October 1999 planning permission was granted to convert the chapel into a house.
Split into simpler sentences: There was a revival from 1940, when it was reconstituted and regular worship recommenced, and the congregation still met as late as 1996. In October 1999, though, planning permission was granted to convert the chapel into a house.