Those are apples and oranges. You can submit corrections for much longer than 1.5 years. Why be afraid if you filed correctly? Just have some confidence.
In the context of fear, no they are not apples and oranges.
"Why be afraid if you filed correctly? Just have some confidence."
LOL. Or seven years down the road...get audited? Why can't the IRS have some confidence in its collection process? Why can't the window close are two or three year?
If you think confidence is what gets you through an IRS audit, you're a fool.
How do you know that fives years down the road received a cheque from the IRS for a mistake the IRS made?