thats so interestingChen Dao wasn't in the original Romance of the Three Kingdoms novel because of a lot of his accomplishments would be attributed to Zhao Yun in that text.
However, historically speaking, Zhao Yun's legendary status in pop culture is thanks to both the historical figure that is Zhao Yun and the accomplishments of Chen Dao.
Roughly speaking, both Zhao Yun and Chen Dao are one and the same, and that this really is Shu's Five Tiger Generals.