Index/Match, Xlookup, Concatenate - Help Needed

- I'm working with three columns (see attached file): Company, Project, Description.

- I need help creating a simple a simple Yes/No chart (highlighted yellow in the attached file) to display Yes/No if the project & description combination is tied to a project in column B.

- The issue I'm having here is that sometimes the project name is duplicated between companies, but with a different description for each company (or sometimes the same one), or sometimes two or more companies share the same description, but for different projects.

I think the attached file better explains my ask, but I just need help combining some formulas to get the yellow-highlighted area automated. Thanks!

A couple of changes:
1) remove column F concat formula as a helper column is not needed.
2) In G4 use the below formula:

Formula:

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3) In H4 use the following formula and then drag down and across:

Formula:

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Glad it worked, and thanks for the rep!