I understand that:
- A Roth 401(k) may be rolled over to a Roth IRA if older than 59.5-year-old or if leaving one's job.
- It is possible to do in-service distributions from an after-tax 401(k) to a Roth IRA or Roth 401(k) when employed, if the employer's retirement plan allows it.
Can a Roth 401(k) be rolled over / in-service distributed / transferred somehow to a Roth IRA if younger than 59.5-year-old and not leaving one's job?