Someone who passed away in calendar year 2020 and who was otherwise eligible can receive both EIP1 and EIP2.
IRS website - https://www.irs.gov/newsroom/recovery-rebate-credit-topic-b-eligibility
A12. An individual who died in 2020 or in 2021 and did not receive the full amount of the Economic Impact Payment may be eligible for the Recovery Rebate Credit if the individual met the eligibility requirements.
