Detect permanet "Telepathy bond"

[Javiash]

Hi, and DMing Rise of the Runelords, and my party is about to fight with creatures with a permanent pelepathic bond. Can my party detect this bond with "detect magic"? I know they wont be able to detect with whom they are bond if the other one is far enough, but could they tell that the creature is talking with someone else?

[Beopere]

You can detect and identify active spells, including permanent ones. The relevant text is in the detect magic spell and knowledge arcana.

[Javiash]

Thanks!!