Complex sentence: McGillagan (1999), p.54 Eastwood began a romance with a girl named Maggie Johnson and during this time he worked managing an apartment house in Beverly Hills by day (into which he then moved) and worked at a Signal Oil gas station by night.
Split into simpler sentences: McGillagan (1999), p.54 Eastwood began a romance with a girl named Maggie Johnson. During this time he worked managing an apartment house in Beverly Hills by day (into which he then moved) and worked at a Signal Oil gas station by night.