Snape and Lucius - same person?

[ladyramkin2000]

No: HPFGUIDX 94956

Even if Homer had nodded and JKR had missed the scene with Snape and 
Lucius together at the quidditch match, would she have allowed two 
different actors to play these characters?.  Jason Isaacs and Alan 
Rickman are fairly alike to look at, but not to that extent.
Sylvia (reluctantly partingwith the idea of Snape as Draco's dad.)