Prior Year Roth IRA Contributions (Distribution Ordering Rules)

I am uncertain how to answer regarding Turbo Tax interview Questions about prior Year Roth IRA contributions (Distribution Ordering Rules).  I am using TurboTax Desktop (TT).

Background:
I opened a Roth IRA in 2019, by a rollover of my Roth 401k ($3,540 - all from my payroll deducted contributions).
Subsequent deposits in the Roth IRA are as follows:
- in 2020, a partial rollover/conversion from my pre-tax 401k ($4,000)
- in 2021, a partial transfer/conversion from my traditional IRA ($5,000)

In 2023, I took a nonqualified partial distribution from the Roth IRA ($4,600).  This was my first withdrawal.  The Roth IRA remained open on 12/31/2023.

Questions:
When answering the Turbo Tax interview Questions about prior Year Roth IRA contributions, I am confused regarding the “Distribution Ordering Rules”:
1. TT Question:  “Enter prior year Roth IRA Contributions.  Confirm your net regular contributions prior to 2023 that remain in your Roth IRA.”
     My Question:  Is the initial deposit ($3,540 – rolled over from my Roth 401k) considered regular contributions?

2.  TT Question:  “Tell Us the Years.  (Provide the) “years that you converted a traditional IRA to a Roth IRA”
     My Question:  Is the 2020 conversion ($4,000) from the 401k to be listed here, the same as a conversion from a traditional IRA?

Thank you!