Sathanus's Links
Sathanus never felt much more than respect for Samael as his elder. Since falling, he has had more time to reflect on the failings of their heavenly war and Sathanus sometimes finds himself lingering on questions of loyalty. He still does not understand why Samael would have turned down Lucifer's offer, nor why he continues to linger in the company of humans instead of following the rest of his family down when Heaven rejected him, but Samael in particular does not occupy much of Sathanus' thoughts.
Iblis was an angel Sam was never close to, though they were one of many among his choir. They fought against each other during Lucifer's rebellion but their interactions prior were limited to a distant mentorship like many other malakhim. Samael does not know much of his status now, save for his rank as ruler of the Circle of Wrath and the new name he goes by.