  We test the impact of the ATLAS and CMS multi-lepton searches performed at
the LHC with 8 as well as 13 TeV center-of-mass energy (using only the pre-2018
results) on the chargino and neutralino sector of the NMSSM. Our purpose
consists in analyzing the actual reach of these searches for a full model and
in emphasizing effects beyond the MSSM that affect the performance of current
(MSSM-inspired) electroweakino searches. To this end, we consider several
scenarios characterizing specific features of the NMSSM electroweakino sector.
We then perform a detailed collider study, generating Monte-Carlo events
through Pythia and testing against current LHC constraints implemented in the
public tool CheckMATE. We find e.g. that SUSY decay chains involving
intermediate singlino or Higgs-singlet states can modify the naive MSSM-like
picture of the constraints by inducing final-states with softer or less-easily
identifiable SM particles -- reversely, a compressed configuration with
singlino NLSP occasionally induces final states that are rich with photons,
which could provide complementary search channels.
