One is waiting with Madame in the same place (6)

I believe the answer is:

ibidem

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'in the same place' is the definition.
(synonyms)

I don't understand how the remainder of the clue works.

(Other definitions for ibidem that I've seen before include "In the same place (in references)" , "In the same place, used in referencing" , "Previously cited (in this book)" , "In the same place as previously mentioned" , "Notation meaning in same book or passage, often shortened" .)

I've seen this clue in The Guardian.

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