I'm surprised Sonic 4 is still canon.

I thought Sonic Mania usurped its position.

Is it that hard to grasp that they left a few ambiguous placements for Sonic Team and the fans to work with going forward

No, Sonic Team hasn't forgotten about SegaSonic and the Storybook games. They're as important as ever. They just can be placed pretty much wherever you like

"Where is Tails Adventure? Is it safe? Is it canon?"

^"It seems, in your anger, you retconned it."

"I... I couldn't have. It was acknowledged by Ian Flynn! I felt it!! NOOOO!!!!!"

Of course they think CD takes place before 2. Which it never was the case at all.

Yea no cap Sherlock you think they'd just change what they had just established in 2022

And CD's place makes sense now. Beforehand it was a little muddy as it was never thought about so sometimes one guy would say that it's after Sonic 2 and the other would claim it's before. But with Sonic 3 & Knuckles being set pretty much directly following Sonic 2 it makes sense to put CD before all of that

@Mr.Joker420

Here we go again. This will end the same way it always does, so just stop.

It's still a work in progress at this point, so expect more games to be added to the timeline

I think they just left out some of the most inconsequential games because they don't really change or add anything that'll stick around, so they didn't feel a need to mention them, they're definitely still canon though because Secret Rings is mentioned in Generations.