Jeep Wrangler only overheats on highway...what's going on? (not what I expected)

Troubleshooting process on Jeep Wrangler with the Chrysler 3.6L Pentastar engine that is overheating on the highway only. We go through the process of bleeding air out of the system and move toward thermostat and water pump replacement. You might be surprised what it actually was.
Links to items showcased in video:
cooling system funnel kit: amzn.to/3K4P41k
vacuum refilling kit: amzn.to/40x6A3O
launch diagun: amzn.to/40dZ8L0
thermostat: amzn.to/40u8LFk
water pump: amzn.to/42FBn0i
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