And for the most expert ones...

Having found Shawn Tribe's idea of a liturgical quiz very interesting, I thought I would put out another quiz for the most expert readers.

It's taken from the Theologicae Quaestiones proposed during a meeting of the Ambrosian Clergy at the beginning of the XXth century.

Johannes sacerdos ambrosianus peregrinus Romam ritu romano celebrat; alia die distractus post ablutionem manuum in medium altaris reversus statim consecrat panem; admonitus post peractam consecrationem, haeret anceps utrum statim transeat ad consecrationem vini; et post aliquam reflexionem prosequitur offertorium ritu romano, et suo tempore novam hostiam sub conditione consecrat, et dein vinum.

Alia vice, in patria sua cum rite ad consecrationem panis pervenisset eamque peregisset, sensus amittit eosque non recuperat nisi post duas horas: vult autem consecrationem calicis peragere ad implendum sacrificium.

Quaeritur:
1) Quaenam interruptio impediat unionem inter duas consecrationes in Missa.
2) Quid in casibus

"John, an ambrosian priest, during a pilgrimage to Rome, celebrates according to the Roman Rite. One day, being inattentive, after the ablution of the hands, he returns to the middle of the altar and immediately consecrates the bread [ N.B. the reason for Fr. John's mistake is that in the Ambrosian Rite the ablution takes place not at the offertory, as in the Roman Rite, but immediately before the consecration ]. He's warned of his mistake only after the consecration, and hesitates unsure whether he should pass on to the consecration of the wine; then, after some reflection, he continues the offertory in the roman rite, and, at the right time, he consecrates conditionally a second host, and, then, the wine.
Another time, at home, after having reached the consecration of the bread according to the rite, and having performed it, he looses his senses, and doesn't recover them if only after two hours: he wants nevertheless to perform the consecration of the chalice to complete the sacrifice.
The questions are the following:
1) What kind of interruption prevents the union between the who consecrations in the Mass?
2) What can we say about the two cases above?

Answers in Latin, please.

(All right, English is OK, too)