Iterating with sub model iteration

Question

I have a model within a model. Each model has an iterator. The sub model has a iterate feature class instance and the main model has an iterate row selection. I need for each feature class a field calculated based on the individual polygon locations within the area of the selected row.

I have tried to pass the sub model to a Collect Values tool and use that as a parameter for the main model but "make feature layer" does not allow that as an input.

How do I get each instance of the iterate sub model into the make feature layer command to create my selection?

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I will elaborate a bit about what is happening in the proxy_background that is causing me trouble before I try the suggestions. The iterate inside of the sub-model is running completely before passing each individual feature class to the main model. Essentially, if my file location has 20 feature classes, it iterates 20 times, not once, before it moves to the main model. This is why I put the Collect Values tool thinking I will at least have the paths to move forward. Alas, it did not want to connect to my main model.

Answer 1

You can run the output of the Proxy_Background through the copy features tool with the output called in_memory\temp then connect it to your make feature layer tool.

Answer 2

If you want your feature class from your sub model to connect to the Make Feature Layer tool just drop the Collect values tool and expose the MKey_MUL3 output as a parameter in your sub model. Then that should connect in the master model.