Mel1995

Hello. My father has two businesses and he already filed for business tax extension for 2021. However, he still hasn't filed for individual tax extension for 2021 yet. Also, my father is my joint sponsor. I included the extension and tax returns from previous years with a statement explaining that tax returns for 2021 haven't been filed yet and attached the business extensions. My question is: Should I wait until my dad file his individual tax extension to submit the i864 so that i can attach the individual extension with the i864 or would the business tax extensions be enough with his statement? Thank you