This is the way Pope Francis chose to mark the passing of the cardinal: "HO APPRESO CON TRISTEZZA LA NOTIZIA DELLA MORTE DEL CARDINALE CARLO CAFFARRA. DESIDERO ESPRIMERE A LEI, ALL’INTERA COMUNITA’ DIOCESANA DI BOLOGNA E AI FAMILIARI DEL COMPIANTO PORPORATO LA MIA SENTITA PARTECIPAZIONE AL LORO DOLORE. PENSO CON AFFETTO A QUESTO CARO FRATELLO NELL’EPISCOPATO, CHE HA SERVITO CON GIOIA IL VANGELO E HA AMATO INTENSAMENTE LA CHIESA... 
My translation: "I learned with sadness of the death of Cardinal Carlo Caffarra. I wish to express to all of you, the entire diocesan community of Bologna, and to his family, my heartfelt participation in their suffering. I think fondly of this dear brother in the episcopacy, who has joyfully served the Gospel and intensely loved the Church...."
Not a word about their differences. Says something about both men.