Accounts Connected:

https://bitcointalk.org/index.php?action=profile;u=1920100    guojii
https://bitcointalk.org/index.php?action=profile;u=1920026    jjdd2
https://bitcointalk.org/index.php?action=profile;u=1920023   bbq6
https://bitcointalk.org/index.php?action=profile;u=1919973   xuuy7

Proof:

1) Joined same bounty at the same time 
https://clip2net.com/s/3TTmoFF  (https://docs.google.com/spreadsheets/d/1GS1xvBs0o4DbpH8SosrGN1ADdrsnx2fq0dKng6ziOVo/edit#gid=579373772)

2) same day of registration all of them

3) same number of posts

Related Addresses:

ETH addresses are new

Miscellaneous:

Working time is the same. Same day of registration. Same day and time of registration in bounty.  Same bounty. Same threads for posting