  Motivated by the goal of understanding quantum systems away from maximal
chaos, in this note we derive a simple closed form expression for the fermion
four point function of the large $q$ SYK model valid at arbitrary temperatures
and to leading order in $1/N$. The result captures both the large temperature,
weakly coupled regime, and the low temperature, nearly conformal, maximally
chaotic regime of the model. The derivation proceeds by the Sommerfeld-Watson
resummation of an infinite series that recasts the four point function as a sum
of three Regge poles. The location of these poles determines the Lyapunov
exponent that interpolates between zero and the maximal value as the
temperature is decreased. Our results are in complete agreement with the ones
by Streicher arxiv:1911.10171 obtained using a different method.
