It does not get you out of the two gospel theory either way.
Peter quote the full prophecy from Joel, he was not expecting future generation of Jews to somehow understand the timing.
When Jesus quoted Isaiah he stopped short of the full text because he knew he had to die first and that his apostle would proclaim Joel's fulfillment within that generation.
(Luke 4:18-21 The Spirit of the Lord is upon me, because he hath anointed me to preach the gospel to the poor; he hath sent me to heal the brokenhearted, to preach deliverance to the captives, and recovering of sight to the blind, to set at liberty them that are bruised, To preach the acceptable year of the Lord. And he closed the book, and he gave it again to the minister, and sat down. And the eyes of all them that were in the synagogue were fastened on him. And he began to say unto them, This day is this scripture fulfilled in your ears)
He left out the day of vengeance because he prophesied that day for when Jerusalem was compassed with armies:
(Isa 61:1 The spirit of the Lord GOD is upon me; because the LORD hath anointed me to preach good tidings unto the meek; he hath sent me to bind up the brokenhearted, to proclaim liberty to the captives, and the opening of the prison to them that are bound)
(Isa 61:2 To proclaim the acceptable year of the LORD, and the day of vengeance of our God; to comfort all that mourn)
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(Luke 21:20 And when ye shall see Jerusalem compassed with armies, then know that the desolation thereof is nigh.)
(Luke 21:22 For these be the days of vengeance, that all things which are written may be fulfilled.)