  This note is an attempt to interpret some excesses, not yet significant due
to systematics, observed by ATLAS and CMS in various analyses related to the
standard channels ttH, ttZ and ttW. It is argued, within a composite
interpretation of top particles, that such excesses are not necessarily related
to these channels themselves, although this is not excluded, but due to the
underlying presence of either vector-like heavy quarks tprime,bprime or to
final states as predicted in composite theories. The outcome of this discussion
is that although it will not be easy to reach an exclusive interpretation, the
data collected at 13 TeV may establish the origin of this effect as coming from
the four top quark topology.
