Complex sentence: Her nervous behavior during the visit unsettles Patrick, and he leaves feeling dejected and despondent; and he later receives a verbose email from Jeffrey asking him not to reach out to her before speaking to Jeffrey first.
Split into simpler sentences: Her nervous behavior during the visit unsettles Patrick, and he leaves feeling dejected and despondent. He later receives a verbose email from Jeffrey asking him not to reach out to her before speaking to Jeffrey first.