Complex sentence: After he was poached by the BBC to head their drama department in late 1962, Sydney Newman invited Shubik to join him at the BBC and, on the condition that she be promoted to producer within nine months, she made the move in November 1963.
Split into simpler sentences: After he was poached by the BBC to head their drama department in late 1962, Sydney Newman invited Shubik to join him. On the condition that she be promoted to producer within nine months, she made the move in November 1963.