Conversation so far:
When did Lyman begin playing for the Chicago Bears?
In December 1925, Lyman joined the Chicago Bears.
Was he successful playing with the Bears?
The 1926 Bears team featured five players who were later inducted into the Pro Football Hall of Fame (Lyman.

Question: How long did he play for the Bears?
Self-contained rewrite: How long did Link Lyman play for the Bears?