The Mandalorian (Beskar Armor) or BAM for short has the ability protective intuition which states:
The first time each Scoundrel ally falls below 75% Health, The Mandalorian (Beskar Armor) dispels all debuffs on himself, gains 1 stack of Whistling Birds, and takes a bonus turn, and the cooldown of Wonder of the Force is reset.
Under Bo-Katan (mand'alor) lead with IG-12 and Grogu he is sometimes able to have this bonus turn triggered by the same ally more than once. I suspect it is probably just resolving the ancestral health gain / healing before the effect expire check for BAM's bonus turn marker... but I am no expert. I do have video of this happening, and have seen it happen to people who are streaming as well.
A clip of this happening in yesterday/todays GAC attack phase, I can provide the entire battle if that matters at all:
https://youtu.be/jU4mhJzBAC8?si=JlkXSNvYPAOuojOV
If it matters my Bo Katan has the unique and leadership omicrons but not the special.