The U.S. Court of Appeals for the First Circuit took up convicted Boston marathon bomber Dzhokhar Tsarnaev’s challenge to his death sentence again on Tuesday, with the panel honing in on social media posts that two jurors failed to disclose during jury selection.

During oral arguments, Judges William Kayatta and Ojetta Rogeriee Thompson asked if there’s a relevant distinction between a juror retweeting a post about the 2013 bombing and personally writing about it online.