If I understand the situation, the excess contribution was made in 2019 by your employer, then remedied in early 2020. Assuming you made all the required income adjustments with your 2019 tax return, then answering "no" to both questions in 2020 seems logical. (The 2020 1099-SA documents the withdrawal.)
The Social Security and Medicare question is a tough one, but if it were me, I wouldn't sweat it.
