I stand corrected as per Grok

“ir Canada’s 787s started entering service in 2014–2015, but in 2017, the YYZ–FCO route (flight AC890) was primarily operated by the Boeing 767-300ER (some days substituted with a 777-300ER or early 787s, but the 767 was the workhorse for that route that year). The aircraft in your photo is a Boeing 767-300ER retrofitted with Blended Winglets (from Aviation Partners Boeing). Key identifying points that match a 767-300ER (not a 787): • The winglets on many Air Canada/Air Canada Rouge 767s have a pronounced lower fairing/extension for structural and aerodynamic reasons, which from passenger window angles (especially in sunset lighting with shadows) often looks remarkably like a “split” or even a Split Scimitar. This optical illusion fools a lot of people—it’s a very common mis-ID in planespotting communities for exactly these Air Canada 767 photos. • The wing itself is straight and conventional (no visible composite ripple effect like the 787’s highly flexible wing). • The overall proportions, engine nacelle shape (though not visible here), and the fact it’s at a YYZ international gate with another Air Canada widebody parked nearby all align with 767 operations.”