13 This special friendship between Boniface and the Holy See was confirmed by the next pope, Gregory III, when Boniface sent messengers to him on the occasion of his election. "The messengers demonstrated to the new pope the pact of friendship between his predecessor and Boniface and his companions" and "the messengers assured him that he could depend on his humble servant in the future." Finally, they asked "just as they had been instructed, that the pope's subject might again benefit from friendship and union with the holy pope and the Apostolic See." The pope received the messengers favorably and gave them new honors for Boniface, among them "the pallium of the archiepiscopate. Then he sent them back to their own country laden with gifts and relics of saints."
Source: In Hac Tanta (Vatican.va)