Tie in Sump Pit to sewage line as safegaurd?

[Jerry33]

If one were to install a pipe that lead from the top 1/3 of the sump pit to the sewage clean out pipe, could that adequately perform as a backup in case of a pump failure?

I do know that it is illegal to drain to sewage, just curious if I were to lose my pump and my water powered backup, if this type of setup could perform up to snuff.

Thanks.
Jerry