Although your report isn't not clear enough, but I understand that both of them using same BSC address and they're participate in the same campaign for multiple times. One of the campaign they participated didn't allow multi-accounts, so they broke the campaign rules and deserve to get negative feedback.
Maybe you forgot that you published this account several years ago. If you want to develop drama on that account, you just need to look for solid evidence from the account that you previously published.
they are connected in blockchain transactions, although it cannot be firmly proven, but can be the basis for developing further investigations.
For the two accounts mentioned, currently use the same signature and avatar from the bounty campaign. they also registered but I don't see those two accounts in the spreadsheet.