Merging Team Chat Channels

[LDRzoom]

I have two team chat channels, generated by different individual, with slightly different user memberships with a strong overlap.

I would like to merge the content of these channels - preserving all content - into one combined channel with the content interleaved in time sequence and the user list to be updated to the union of the lists that were on each.   

I have not found a way to do this in practice, or on the net, or on these boards.  

Is this possible in the context of the existing platform,  and if yes, what are the detailed steps?

Any advice is greatly appreciated.  The channel feature is awesome but I need to prune down the proliferation of non-unique channels.