The sign on the ballons looked similar but the Divsion Bell had more lines. Perhaps it means something like evolution like in the band becasue Division Bell is more evolved than AMLOR. It also could just be different.

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Follow me "he sounded of dreams supreme" follow me
Drifting within the glow and the after-glow of the eve
And if that firelight, I could match the inner flame
Sacred ships do sail the seventh age.