Complex sentence: Brownlow's championing of the film succeeded and the restored, re-scored version was shown in London and New York in 1980 and 1981, with Gance just living to see the acclaim for his restored film.
Split into simpler sentences: Brownlow's championing of the film succeeded and the restored, re-scored version was shown in London and New York in 1980 and 1981. Gance lived to see the acclaim for his restored film.