PETG finish changes mid print - Troubleshooting - Bambu Lab

What would cause this kind of finish change in the middle of a print?

Unsure as to why some of the print is glossy and the other is a matte finish? Printed on the Bambu Lab X1-Carbon w/ Prusament PETG at 265°C. : r/FixMyPrint

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BambuLabX1C Polymaker Lite Pla Pro. Can someone help me with, why the lower part has a glossy finish and after that is matte? This is my first 3D printer… and I know

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Help with PETG Issues on P1P: infill breaks despite drying : r/BambuLab

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PETG finish changes mid print - Troubleshooting - Bambu Lab Community Forum