You only need to flip the callouts if the team inside are shooting oracles from where they spawn in after the team is teleported.
If the inside team runs all the way down the stairs to the entrance of the encounter, you do not need to flip the callouts since both teams will be looking at the oracles from the same perspective.
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Ah great, that's the answer, that makes sense, still need to get better at the callouts Grandpa Gamer, I my have you beat in the age dept. My last for digits are my birth year.