The problem, of course, is that Hebrews 12:1 does not say or suggest that dead saints are aware of what happens on earth. On the contrary, Hebrews 12:1 says that we are aware of the lives of dead saints - of their faith while they were here on earth, as set forth in the previous chapter. The "great cloud of witnesses" testify to us, not about us, and Dave's failure to recognize this simply truth is reflection of the detail of his exegesis (none).
Revelation 6:9-10 likewise fails to say what Dave claims, rather it states:
9And when he had opened the fifth seal, I saw under the altar the souls of them that were slain for the word of God, and for the testimony which they held: 10And they cried with a loud voice, saying, How long, O Lord, holy and true, dost thou not judge and avenge our blood on them that dwell on the earth?These dead saints are neither praying for us, nor even about us, but are rather shouting for justice upon the wicked, i.e. for judgment day!
Thus, we can see that Armstrong's claims that Dr. White does not interact with him sufficiently are the pot calling the kettle black: Mr. Armstrong himself not only fails meaningfully to interact with Dr. White's response, Mr. Armstrong misrepresents Scripture and demonstrates the positional weakness of the Roman Catholic position on prayers to the departed.