Complex sentence: Derek, was a delivery man at the Rovers Return Inn, who landlady Liz Mcdonal immediately took a shine to Derek and he appeared to feel the same way, so she attempted to get closer to him.
Split into simpler sentences: Derek, was a delivery man at the Rovers Return Inn who landlady Liz McDonald immediately took a shine to. He appeared to feel the same way, so she attempted to get closer to him.