I'm here to help and ensure that your questions are addressed accordingly.
To give you the right amount of information and solution, what exactly are your questions about 940 and 941 forms in QuickBooks Online? Any additional details would be highly appreciated.
In the meantime, you can visit the following link: Tax payments and forms Intuit payroll submits for you. It contains more details on what are the forms we don't send to your state as well as when to access copies of the filed forms in QuickBooks.
I hope you can respond to me on this post so we can work with your concern together. Please know I'm ready to assist further. Have a good one.