Greetings. If you are looking for a company that is capable of realising just such a solution - not just installing glass, but creating a carefully designed, architecturally verified glass link https://gsl-commercialprojects.com/glass-links I recommend paying attention to Glass Structures Limited. They have real experience in creating light and almost invisible transitions between buildings, where not only visual qualities are taken into account, but also engineering details: thermal insulation, water drainage, tightness, connection of different geometries.