If you are receiving Retirement Benefits from a former employer, that income is normally reported on Form 1099-R.
Since you received a W-2, it may be reporting some income you earned in 2022 or another employee benefit that you received in 2022.
If you have questions about why you received a W-2, you should contact your former employer. It is sometimes proper for your pension to be on a W-2 , such as in the case of non-qualified deferred comp types of plans. If this applies, report the income on your tax return in the W-2 section of TurboTax.
The 'Retirement Plan' box is checked on your W-2 to indicate that you are (or were) enrolled in a retirement plan through your employer.
This does not affect your tax return, unless you are making IRA Contributions.
Here's more info on Retired and Received W-2.
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