Form 8949 with Robinhood Statements

Filled out the my taxes imputing a summary of my sales for Robinhood (Should have done more research before doing that). Now TurboTax is requesting i mail the statements with a form 8949. My question is, will mailing these forms delay my return or does the IRS just want the forms on file for down the road? I have seen a lot of posts about mailing these forms but nothing about the time delays, if any, on the return itself.