Dash Table merge_duplicate_headers for multi-header

Hello,
Trying to find solutions to merge for multi-header, me need merge only first row multi-header,
Can I do it like that?
Thank you

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I’m having the same issue. Have you found a solution? Thanks

my workaround was to add a white space at the end of one of the two columns so that they are different names although it is not visiible by the end user.