Eh, Marvel never really said anything. The publisher did, and even then, Gizmodo didn't transcribe their conversation, so their wording might be off. The interview they did with Lyga also points to strict coordination with Marvel Studios and looking at the story, Lyga had knowledge of events that happen in Infinity War (something which can't be said for the shows, unfortunately).
And it has the Road to Infinity War Banner.
The publisher was 100% forced to say it had "no canonical ties" to the MCU, because it spoiled Infinity War before it released.
If we're putting Helstrom on the timeline, because of the MCU references it has, and because of production pointing to it being MCU, then Titan Consumed should definitely also be considered canon/be placed on the timeline.
Link to gizmodo article:
https://www.google.com/amp/s/io9.gi...erses-thanos-origin-will-be-re-1825242897/amp