A first placed schedule means the schedule that is designated for the teams that win their division. The games are actually planned out well in advance based on that.
Unless you think the Chiefs havent won their division for the last 5 years, which I can assure you they have.
That's worlds apart from your earlier claims that the Chiefs' schedule is "the hardest in history".
You constantly make outlandishly silly claims and get comprehensively corrected, then you either ignore the subject entirely (as you have just done yet again - look at the post you quoted) or claim you said something substantially different.
Examples:
"Mahomes is the most successful QB in history" - Response: no, he's got 1 ring and at least a dozen other QBs have 2 or more. One has 7 and he's still playing. You just ignored it.
"Burrow can't scramble, he lacks the mobility to play in the NFL" - that evening Burrow scrambles repeatedly for gains, making multiple first downs, beats a very good Titans team. - You ignore it.
"The Chiefs have the toughest schedule in history" - response: no, they don't. Ten of their 17 regular season opponents will finish with losing records. - Your reply: no, I meant they have a first-placed schedule. (Of course they do. They came first last year. Doesn't mean that THIS year's opponents will be tough.)
"The Chiefs always post a winning regular season record." - response: are you sure? They were set up in 1960 and have made the playoffs 24 times. - Your reply: "when I say always, I obviously only mean in the last six years."
Go into politics mate. You're a natural.