Can I say so? Is it right in terms of grammar?
it was wrong to meet him without having had talked before
I know for sure that it's correct to say:
without having talked
but I mean exactly the past perfect time
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"Having talked" is correct. "Having had talked" is never correct.
Just to add to the existing answer: you suggested that "having had talked" might be appropriate because you're referring to "past perfect time". So you might be thinking of "having talked" as a use of the present perfect. This would be wrong.
"Having talked" is perfect, but it's not present perfect. Participles such as "having" are non-finite and have no tense. So there is no past equivalent of "having talked" because "having talked" isn't a present tense form (or any tense at all) in the first place.