Hello! A network thread counts at the point when the comment "begins" an interaction.
For the original poster, each thread starting from someone who responds directly to your network post would count as one, including a multi-person interaction, as long as the comments from your character totals the correct amount. When your character joined the thread is irrelevant. However, if there are additional sub-threads branching beneath that and you have replied to further individuals separately, those would not count as a new thread.
For other players as examples, Nico's player may count this thread as one since they joined the conversation later and their interaction did not start until they entered; however, Zagreus's player may not use the multiple replies that branched below the same thread as separate submissions. The entire thing would count as one.
no subject
For the original poster, each thread starting from someone who responds directly to your network post would count as one, including a multi-person interaction, as long as the comments from your character totals the correct amount. When your character joined the thread is irrelevant. However, if there are additional sub-threads branching beneath that and you have replied to further individuals separately, those would not count as a new thread.
For other players as examples, Nico's player may count this thread as one since they joined the conversation later and their interaction did not start until they entered; however, Zagreus's player may not use the multiple replies that branched below the same thread as separate submissions. The entire thing would count as one.