Very surprised that the bulk of TP's YYZ operation is on A321's, an aircraft usually assigned to "thin" routes. Demand for travel to/from Portugal from YYZ is very strong, and even through the summer only the occasional TP A330 operated the route.
In years past, there was a brief seasonal disconnect on the YYZ-LIS-YYZ route, but not so this year. Route continues through the Winter and loads are strong. Even EI upgauges A321's to A330's during the busy Summer season on the DUB route. Don't understand TP's strategy.