Plugging what is shown online in the excellent line drawing, Quianosuchus nests as the sister taxon to Ticinosuchus, which begets aeotosaurs. Their common ancestor was a sister to Vjushkovia.
I'd like to see that data matrix.
Q also nests just below Turfanosuchus, the last known common ancestor of crocs and dinos.
And its nice to know that none of the metatarsals are reduced in diameter. That little fact has big implications for Irmis's so-called "dinosauromorphs."