The Church wouldn't tolerate "contradictory opinions" for hundreds of years, especially when they concern a dogma of the Faith.
It's indisputable that it has, for hundreds of years, tolerated contradictory differences of opinion on subjects like the Immaculate Conception, the Assumption, Universalism, Jansenism and so forth. Not just for hundreds of years, but in some cases, notably the Assumption, for almost two millenia.
Most American prelates of any note have been flagrant exponents of the Americanist heresy, for example, starting with +Carrol and on and on.
It's also indisputable that many popes scandalously tolerated the laxist doctrines being promoted by the Jesuits in the 16th and 17th century - doctrines which (I think) most people on this board would be appalled at.
Also how could a man like John XXIII (who was even known to be a Modernist long before his 'election') or Paul VI be 'elected' by the majority of the 'cardinals' unless the popes prior to the council were tolerating filthy modernist heretics in the ranks? How could the Vatican II apostasy be embraced by approximately 2,600 bishops (nearly all of them) unless the popes prior to the Council were tolerating them in the ranks? Not all of them were crypto-heretics. Many of them had published writings before the council. Hardly a thing was done about those men.
There's no determined or defined limit on how long popes can tolerate evil, heresy, and heretics. If the popes can tolerate heretics for a few decades (Modernists), and they can tolerate heretics for over a century (Americanists), and they can tolerate heretics for a century and a half (laxists), then they can tolerate heresy for four centuries (EENS-Denial), and they can tolerate Baptism of Desire for even longer.