*Thane knows who took his engine cleaner
*Nethermane disgusted by the state of Thane's bathroom
[joke. it kinda relies on notion that Nethers fur takes special kind of chemicals to clean from soot of his damaged cells and synthetic oils, as well as just dirt of environment and ashes of whatever could've touched his defence screen that day..]

They did interact in canon tho. Had a brief discussion about why Thane is not a fan of phantom influence [as well as why Nethermane might not want to experience it on himself], so they aren't exactly fond of each other.