The obvious course of action would be to request a clarification of Fr. Chazal.
His position is not necessarily schizophrenic, as he may be relying upon Billot (ie., He might believe the election of Francis was not canonical, but nevertheless, the universal public assent of the bishops “heals in the root all defects” in the election process), thereby rendering his pontificate legitimate, despite alleged uncanonical irregularities.
That argument would be coherent and consistent.