Alert rule to trigger 2 Escalation Chains?

Hi all,

I currently have some alert rules set up. I’m trying to get it to trigger 2 Escalation Chains ( one of these posts to a slack channel and the other one sends a mobile alert )
Separately, these both work as intended when sending the demo alert via the Integration which is linked.
Within the Notification Policies I have set them up correctly also and when I preview the alert routing on the alert it shows as hitting the correct 2 Notification Policies.

What I am seeing when triggering the alert is that it is sending correctly to 1 of the notification policies but then looks to be getting caught on a default policy with a different label matcher.

Just wondering is there a better way to achieve 1 alert triggering 2 Escalation Chains?

Thank you in advance!