Which language learning company's logo contains hidden symbolism representing speech and conversation between two profiles?

Language learning platforms, translation services, and linguistic technology companies often embed clever symbolic elements in their branding. These logos may contain typographic innovations, cultural references, or visual puns that relate to their mission of connecting people across languages. Test your knowledge of the subtle design elements that language-focused companies use in their visual identities. Can you identify which famous language company logo contains this hidden meaning?

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Duolingo (the owl's beak is actually designed to look like a speech bubble)
Babbel (the double 'b' in the middle creates two face profiles looking at each other)
Rosetta Stone (the stone tablet shape contains embedded quotation marks)
Lingoda (the circular 'o' represents a global conversation with arrow elements)