  NGC 4151, a nearby Seyfert galaxy, has recently been reported to emit gamma
rays in the GeV range, posing an intriguing astrophysical mystery. The star
formation rate of NGC 4151 is too low to explain the observed GeV flux, but the
galaxy is known for its coronal activity in X-ray and jet activity in radio. We
propose that either the combination of these two activities or the jet activity
alone can account for the gamma-ray spectrum. An energy-dependent variability
search will allow one to distinguish between the two scenarios, as the coronal
component can only contribute at energies of $\lesssim1$ GeV. Our analysis also
indicates that it might still be difficult to see coronal neutrinos from the
apparently X-ray brightest Seyfert NGC 4151 with current-generation neutrino
observatories.
