  Despite a great deal of effort in searching for the triplet-like Higgses in
the type-II seesaw model, evidence for their production is yet to be found at
the LHC. As such, one might be in the balance regarding this model's relevance
at the electroweak scale. In this work, we peruse a scenario, akin to
compressed mass spectra in Supersymmetry, which might have eluded the
experimental searches thus far. We perform a multivariate analysis to
distinguish signals with a pair of same-sign leptons with low invariant mass
from the SM processes, including those accruing from fake leptons and electron
charge misidentification, and find that a significant part of the hitherto
unconstrained parameter space could be probed with the already collected Run 2
13 TeV LHC and future HL-LHC data.
