Interesting ... Does Baha'i exegesis claim divinity for one or both?
For both. They are seen as the 2nd and 3rd Woe mentioned in Revelation. Muhammad was the first Woe.
Note that the 3rd Woe came quickly.
The Declaration of the Bab in AD1844, or AH1260 is seen to be the promised return of Christ.
The Message of the Bab mirrored that of Jesus and interestingly lasted twice as many years. Also the Bab is seen as Elijah, who must always come first.