Originally Posted by ctownflyer

I'd guess that it's Fresko, but try reaching out to UA (CS or media) to see if they can confirm who the supplier is for that route in both directions. KSMLs can be a 1 or a 10 based on the supplier.
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I flew EWR-JNB-EWR in J last October, but that was before KSMLs were restored. But it's a great flight to get in some work and a full night of sleep without much jetlag.