Overlap is best understood as a proposed or discussed symbol concept rather than an officially approved emoji. It was associated with the kind of abstract relationship and interface symbols that appeared in Unicode and emoji-related discussions, including the 2014-era interest in expanding emoji beyond faces, animals, and objects. The idea would have represented two things crossing, sharing space, intersecting, or being partially on top of one another. It never became a standard Unicode emoji with an official Apple, Google, or Unicode emoji design.
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Emoji History The emoji code/ image log of changes.
This emoji was one of the "suggested emojis" the Unicode group unveiled in June 2014 [article], however, it has been, and still is, up to the companies who support emoji in their operating systems to provide not only images but also an algorithm to replace the emoji code into the emoji image.
