Kiffin also declined to name a starter for Sunday's game.
"I don't know that," Kiffin said. "We'll see what Daunte looks like tomorrow when he comes out and go from there. (JaMarcus) and Andrew both got some service reps today and we're going to continue to evaluate that."
Being uncertain of who their quarterback will be is nothing new for Kiffin and the Raiders this season. McCown and Culpepper have both started for Oakland this season while Russell made his NFL debut last week during a two-series stint against the Broncos.
Since Favre's streak began on Sept. 27, 1992, the Raiders have used 16 different quarterbacks while the Packers haven't had to make a change.
"It's the coolest thing in sports to me, the streak that he has going," said McCown, who was knocked out of Oakland's lineup earlier in the year with a variety of foot and hand injuries. "I especially have a new respect for it this year. I thought (Favre's streak) was cool before but now I kind of feel it, understand what he's done. It's pretty remarkable."
Culpepper said he is taking it day by day with his quadriceps injury and doesn't want to risk making the situation worse by trying to play through the pain.
He also shot down rumors that he injured himself while racing teammates after practice one day last week.
"I run every day after practice," Culpepper said. "I probably shouldn't have been running that day. I felt the pain but I'm the type of guy who wants to run through it. I probably shouldn't have been running that day."