Answer:
The doctor and he talked for quite some time.
Step-by-step explanation:
The above sentence is a compound sentence because it has 2 subjects.
The doctor and the male person (with the doctor).
The doctor is noun corresponding to He, a personal pronoun (subject).
Since both speakers are linked by the conjunction and:
1.they both should carry the same weight in the sentence - He (a personal pronoun subject)
2.are subjects of the sentence because they both produce an action - Talk.
3.both speakers agree with the verb Talk.
written simply: They (the doctor and he/ he and the doctor) talked for some time.