  The cross section for electron-impact single ionisation of W14+ ions has been
calculated by using two different approaches, i.e., the subconfiguration
averaged distorted-wave (SCADW) method and the more involved level-to-level
distorted-wave (LLDW) method. Both methods are found to yield very similar
results except for the 4d->5d excitation-autoionisation (EA) channels that
straddles the ionisation threshold. Accordingly, a hybrid theoretical cross
section where the $4d\to 5d$ EA SCADW cross section is replaced by its LLDW
counterpart is in good agreement with the experimental result from an
electron-ion crossed-beams experiment. This is in contrast to pure SCADW
calculations for W14+ and neighbouring charge states which exhibit significant
deviations from the experimental near-threshold cross sections of Schury et al.
[J. Phys. B 53 (2020) 015201].
