  In this paper, we consider the B\"ohmer-Vandersloot (BV) model of loop
quantum black holes obtained from the improved dynamics approach. We adopt the
Saini-Singh gauge, in which it was found analytically that the BV spacetime is
geodesically complete. We show that black/white hole horizons do not exist in
this geodesically complete spacetime. Instead, there exists only an infinite
number of transition surfaces, which always separate trapped regions from
anti-trapped ones. Comments on the improved dynamics approach adopted in other
models of loop quantum black holes are also given.
