(at 40:25) During Leland's fight against Tyler, he stabs him with a shard of glass, which he holds with his right hand, holding Tyler's right shoulder with his left hand. In the next shot, Leland's hands are reversed, and his right hand is holding Tyler's left shoulder. A few seconds later, as the two of them didn't make a move, it's going back to normal, and Leland pulls out the shard of glass with his right hand, his left hand back on Tyler's shoulder.
Wilson Cruz is not credited in this episode even though he appears throughout, it's likely the incorrect title sequence was used that omits his name and may be corrected in future releases.
All season, the Red Angel has been described as possessing technology far beyond anything the Federation has ever encountered, which is part of the evidence that led the crew of Discovery to conclude that it must have come from the future. Here it is revealed that the Red Angel suit was developed by Burnham's mother 20 years prior, meaning not only is it not from the future, it's actually two decades older than what Discovery itself is working with.
Gabrielle Burnham mispronounces the name of Michael Burnham's first ship, the USS Shenzhou, as "Shin-Zo."