could past perfect tense and present perfect tense coexist in a compound sentence. Please do not mark as duplicate if you have not read the question
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Why do people sometimes use the past perfect form of a verb when the past would suffice? (e.g. "you had mentioned")
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When to use the present or the past perfect tense?
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tense and time and composite sentence
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Usage of past tenses with "wish"
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Present perfect or simple past?
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"Now is the time" followed by past tense verb
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Adverbs + Present Perfect
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Tense to use with "would"
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Would it be possible to change past perfect into simple past
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Simple past or present perfect?
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Present Perfect Usage of "Think" for Recent Past
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Present Perfect vs. Present Perfect Continuous
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Is the usage of tenses correct in this sentence - "two days had passed since she had last eaten or slept"
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Is every sentence in a tense?
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Present tense for future events
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Present-perfect-tense vs. Simple-past-tense
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Is there a simple and clear way to explain the difference between past simple and present perfect?