Pipeline should be triggered by record created by either user or pipeline

Hi

I have two related pipelines. One should trigger based on the actions of the other, but it's not.  

Pipeline 1: When a new record is created in Table "Notes", a date field is updated in the related Table "Account."  

Pipeline 2: When data is updated in Table "Activity," a new record is created in Table "Notes"

If I create a new "Notes" record, it will run Pipeline 1 just fine. 

However, if a new "Notes" record is created through Pipeline 2, then the Pipeline 1 will not run, and the related date is not updated.  Why not? 

If a Pipeline creates a record, does that not count as a record created to trigger the other Pipeline?  Do I need to build in the actions of pipeline 1 into my pipeline 2?

I confess I'm a bit late to the Pipeline party and just slowly trying to migrate automations.  These migrated fine, the one isn't working all of the time it should.  I have others with YAML errors, but that's a question I'll deal with another day.

Thanks for the help!

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Kim G
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