The Curious Incident of the Lion in the Night-time

In his sermon on Daniel 6 yesterday the Rev'd Tony Baker suggested we might think of it as the curious incident of the lion in the night-time, alluding to the Sherlock Holmes story 'Silver Blaze', which contains the following exchange:

"Is there any point to which you would wish to draw my attention?"

"To the curious incident of the dog in the night-time."

"The dog did nothing in the night-time."

"That was the curious incident," remarked Sherlock Holmes.

I guess we may think of the angel of v22 whom God sent to shut the mouth of the lion as a type of Christ who defends us from our enemy the devil (cf. 1 Peter 5:8). Perhaps some even suggest that the angel was Christ himself?