They would immediately notice the sudden door-sized blank space of rock between the doors.
The doors are of variable size.
See strip 1203, panel 5. There is a tiny door between two huge ones on the right; on the left is a big stone space. Thus, my suggestion is certainly plausible. True Seeing will show a Wall of Stone as just stone, right?
Last edited by drazen; 2020-11-01 at 09:43 AM.
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I Am A: Chaotic Neutral Human Sorcerer (5th Level)