When multiple axolotls attacking a mob, kill the mob that targeted by axolotls can stack the duration of regeneration effect. There is a 2 minutes limit on effect stacking in Java, but there is no limit in Bedrock.

Steps to reproduce

1. Create a small pool
2. Spawn a lot of axolotls
3. Summon a drowned or guardian and then kill it manually
4. Repeat above steps

→ You will get a very long duration of regeneration effect, instead of 2 minutes.