Caprara said can be depended upon, Bonaparte frequently used to
intimidate or flatter the Pope in this manner.

The representations of Cardinal Caprara changed Napoleon's first
intention of being again crowned by the Pope as a King of Italy. His
crafty Eminence observed that, according to the Emperor's own
declaration, it was not intended that the crowns of France and Italy
should continue united. But were he to cede one supremacy confirmed by
the sacred hands of a pontiff, the partisans of the Bourbons, or the
factions in France, would then take advantage to diminish in the opinion
of the people his right and the sacredness of His Holiness, and perhaps
make even the crown of the French Empire unstable. He did not deny that
Charlemagne was crowned by a pontiff in Italy, but this ceremony was
performed at Rome, where that Prince was proclaimed an Emperor of the
Holy Roman and German Empires, as well as a King of Lombardy and Italy.
Might not circumstances turn out so favourably for Napoleon the First
that he also might be inaugurated an Emperor of the Germans as well as of
the French? This last compliment, or prophecy, as Bonaparte's courtiers
call it (what a prophet a Caprara!), had the desired effect, as it
flattered equally Napoleon's ambition and vanity. For fear, however, of
Talleyrand and other anti-Catholic counsellors, who wanted him to
consider the Pope merely as his first almoner, and to treat him as all
other persons of his household, His Eminence sent His Holiness as soon as
possible packing for Rome. Though I am neither a cardinal nor a prophet,
should you and I live twenty years longer, and the other Continental
Sovereigns not alter their present incomprehensible conduct, I can,
without any risk, predict that we shall see Rome salute the second
Charlemagne an Emperor of the Holy Roman Empire, if before that time
death does not put a period to his encroachments and gigantic plans.