Hey all,
I have a question about a dataset that was created before I was onboarded and it's got me confused!
Overview
Essentially there is a parent hosted feature layer (HFL). Let's call it "Food". From it, there is a hosted view layer, let's say "Fruits". However there is also another layer created from that parent layer which is a feature layer, let's say "Veggies".
Whenever the parent HFL is updated, both the hosted view and feature layers are updated, however I have no idea how the feature layer (veggies in this example) was created.
Screenshots
Parent HFL
The parent HFL shows up as a hosted feature layer as expected.

Hosted View Layer
The hosted view layer also shows up as a hosted view layer as expected.

It also references the parent HFL in the details pane.

Feature Layer
This is where I get confused! This "feature layer" is tied to the parent HFL. So when the parent gets updated, this feature layer also gets updated. However I have no idea how this was created.
It just shows up as a "feature layer"

All that is found on the details pane is the following:

The only way I can tell that it's connected to the parent HFL (apart from seeing the updates) is checking the REST services directory for the item and seeing that it refers to the parent HFL.

This isn't causing any functionality issues, but it just bothers me that I have no idea how it was created!
Question
Since this feature layer is tied to the parent hosted feature layer, but it's not a hosted view layer, how was this feature layer created?
Was it created using an old workflow that is now outdated/not available (e.g., some kind of workflow related to Collector)?
Some other "view layer-esque" function that I'm not aware of?
Any context/information would be greatly appreciated!
Thanks