A Jesuit who is ordained to the Latin Church, as most are, can be granted faculties in another Church This is the case with Father Pacwa;
Diakonia’s statement s actually worded correctly. The Maronite church is distinct from the Latin church sui iuris. As for rite, the Maronite is West Syriac Antiochene.Same Church, different rite. To be in “another Church” one would cease to be Catholic. The Maronite rite is a part of the Catholic Church.
The Maronite church is part of the Catholic Church, actually one of twenty-three. Between the 22 Eastern churches, three families of Rites are in use (Alexandrian, Antiochene and Byzantine). Four if you count Armenian separately.