What did the misfire say to the two catalytic converter in this 2002 Chevy…

What did the misfire say to the two catalytic converter in this 2002 Chevy Astro van… when you wait till you need a smog check to get the check engine light to come off … 6+ months driving with a misfire will do that to two catalytic converter.. broke one and melted and clogged the other.

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