Can Thorne-$\dot{\textrm{Z}}$ytkow Objects source GW190814-type events?
  The LIGO-Virgo collaboration reported in their third run the coalescence
event GW190814 involving a 2.6 $M_{\odot}$ object with a 23 $M_{\odot}$ black
hole. In this letter we study the conditions under which
Thorne-$\dot{\textrm{Z}}$ytkow objects (T$\dot{\textrm{Z}}$Os) can be connected
to that type of events. We evaluate first the rate of appearance of
T$\dot{\textrm{Z}}$Os in the local Universe. Under the assumption that
T$\dot{\textrm{Z}}$Os eventually become low mass gap black holes we evaluate
how those black holes end up in binaries with other stellar mass black holes
and compare to the reported rate for GW190814-type of events (1-23
$\textrm{Gpc}^{-3} \textrm{yr}^{-1}$). We find that T$\dot{\textrm{Z}}$Os in
dense stellar clusters can not explain the LIGO-Virgo rate without a
T$\dot{\textrm{Z}}$Os population in the field providing a dominant
contribution. We also find that T$\dot{\textrm{Z}}$Os formed within
hierarchical triple systems in the field with the third more distant star being
the progenitor of a stellar mass black hole, may be able to give a rate
comparable to that of GW190814-type events. In that case, future observations
should discover mergers between stellar mass and low mass gap black holes, with
the lower mass spanning the entire low mass gap range.
