Now in what Luke here says of Moses and Elias, And it came to pass as they departed from him, Peter said unto Jesus, Master, it is good for us to be here, he must not be thought contrary to Matthew and Mark, who have so connected Peter’s suggestion of this, as if Moses and Elias were still speaking with our Lord. For they did not expressly state that Peter said it then, but rather were silent about what Luke added, that as they departed, Peter suggested this to our Lord.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: de Con. Ev. l. ii. c. 56.