Hello FT peeps,

After using ITA Matrix for months, I noticed that there were a few occasions where ITA Matrix output an empty calendar instead of throwing "no flight result". I didn't pay much attention to this at first but since I am very keen on a recent construction that outputs an empty calendar, I wanted to know if theres any difference between the two.

My wild guess is that ITA knows the construction is possible but it runs out of computational resource to continue the search, hence presenting a "half-baked" result; whereas for the latter, ITA knows straight up that a construction does not obey to the fare rule and hence render it unconstructable.