WI Council of Pisa is successful in 1409?

In 1409 Cardinals from both obediences (Rome and Avignon) met in a Council in Pisa which attempted to end the Western Schism by simultaneously deposing Popes Benedict XIII and Gregory XII. Instead of ending the Western Schism, the Council elected a third papal claimant, Alexander V, who would soon fall victim of an assassination and succeeded by John XXIII.
WI The Council was successful and ended the Schism? If we assume that Gregory XII complies with the Council and retires and the stubborn Benedict XIII has a little "accident" and dies, the way is clear for Alexander V to be recognised as true Pope thus ending the schism (assuming also that he would be saved from the plotting of his eventual successor Baltasar Cardinal Cossa)... How is a successful Council of Pisa alters history?
 
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