  We clarify the role of vector boson fusion (VBF) in the production of heavy
vector triplets at the LHC and the HL-LHC. We point out that the presence of
VBF production leads to an unavoidable rate of Drell-Yan (DY) production and
highlight the subtle interplay between the falling parton luminosities and the
increasing importance of VBF production as the heavy vector mass increases. We
discuss current LHC searches and HL-LHC projections in di-boson and di-lepton
final states and demonstrate that VBF production outperforms DY production for
resonance masses above 1 TeV in certain regions of the parameter space. We
define two benchmark parameter points which provide competitive production
rates in vector boson fusion.
