had improved the papal-Byzantine rapport. However, Constantine's primary motivation for the trip was to forestall a rift between Rome and Constantinople over the Trullan decrees. Constantine departed on 5 October 710. In Constantinople, Constantine stayed in the Placidia Palace, which had formerly been occupied by Pope Vigilius in 547, the representatives of Popes Martin I and Agatho (while attending the Third Council of Constantinople). Eleven of Constantine's thirteen companions who can be identified by name (two bishops, three priests, and all the ranking members of the papal chancellery and household) were also of Eastern extraction. Also accompanying Constantine was the future Pope Gregory II, then a deacon, and another Latin subdeacon Julian. Constantine specifically chose attendants who were "cut from similar cloth" as he, and likely to be sympathetic to the East. While stopping in transit in Naples, Constantine crossed paths with the exarch of Ravenna, John III Rizocopo, then on his way to Rome to execute four high-ranking papal officials by cutting their throats. The four (as evidenced by their staying behind) were opposed to Constantine's new policy of rapprochement with Constantinople. Doubtlessly, Constantine himself learned of the exarch's errand before departing for Sicily, then Gallipoli, and then Otranto, where the group stayed for winter. In the spring, Constantine crossed the Ionian Sea, meeting the strategos of the imperial fleet on the island of Chios and was received by the Karabisianoi before proceeding to Constantinople. Constantine entered Constantinople on a "horse caparisoned with gilded saddle clothes and golden bridles and bearing on his head the kamelaukion, or diadem, which the sovereign alone was authorized to wear and then only on 'a great public festival of the Lord'". Justinian II's son and co-emperor Tiberius, along with Patriarch Kyros, senators, nobles, clerics, and many others, greeted Constantine at the seventh milestone from the city in the style of an imperial adventus. Justinian II was in Nicaea at the time and urged the pontiff to meet him in Nicomedia. The Liber pontificalis recounts a bizarre scene of the crowned emperor prostrating himself before the pope, but a more mutual greeting is probable. That Sunday, Justinian II received communion from the hands of the pope and issued a vague confirmation of the various privileges of the Roman See. The negotiations regarding the Trullan canons were conducted by the future Pope Gregory II. A degree of compromise (the "so-called Compromise of Nicomedia")—which "diplomatically skirted"