My From 1040-SR has both a non-zero value in line 7 and the box is checked. I am fairly confident I am talking to the IRS; I was vetted by ID.me (requiring a video chat to complete) and login through www.irs.gov.
I'm not sure I like being in a corral with different colored horses! My situation must be fairly common; I invested part of my 401(k) retirement income (taxes already withheld) in a mutual fund, and the IRS feels I owe them taxes on it.
Thanks for your advice.
