When conversation starts on a file, if the file is set as a TAB there is a separate TAB conversation for the same file. Should be linked.
I uploaded a file (xlsx) to teams then started a conversation about this file. However when I then pin the file to by settings the file as a TAB for the team a separate conversation about that tab is created thereby having 2 separate conversation about the same file. They should be either merged or be able to view both conversation histories from the tab. I guess as another issue if the tab was removed I would want all the conversation that happened in the tab to still be saved as a conversation about that file.