I am wondering what that character actually was. I didn't recognize that voice either, but Lee sort of did, although his face was wooden.
There is one set of scenes that made me unsettled and that was right after Walker's wife killed herself.
All of a sudden, she's gone, but Farifax is there outside, then there is no furniture...the door is boarded over...was his wife really that sick that she killed herself when he showed up...what is the purpose of all that.
Where did Angie Dickinson get that dress at the end of the flick, after she and Lee hooked up?
Strange flick, the more you think of it.
All good points...but:
The voice of Fairfax during the telephone conversation with Brwester is so not the voice of the later Farifax/Yost.
Even though the whole film is dream-like (and I get the point), I thought this was cheating on the part of Boorman. Much like...
...Francis Ford Coppola using two different readings of Cindy Williams' phone conversation with Harrison Ford in "The Conversation".
It's okay to be obtuse. But...
While watching this scene(Brewster's speaker phone call to Fairfax) tonight during "Point Blank", it sounded like James B. Sikking (the hit man) on the phone. That might make sense since he later killed Brewster for Yost/Fairfax. Only plot hole would be why Brewster (Carroll O'Connor) didn't notice the difference in the voice.
IMHO,Brewster KNEW that Walker wouldn't know Fairfax's voice and simply acted out the part when he was connected on the phone.
And an earlier poster may be correct.
It DOES sound like James B. Sikking on the phone pretending to be Fairfax.
Suspension of disbelief: Yes. Suspension of logical thought? I'll pass.