Update quote item quantity

Yes, you can draw an overlapping pair of cylinder to next and cylinder to prior. The at=(<coordinate>) key is used to locate the starting point of the second cylinder at the point orthogonal to the first cylinder's end points.

\documentclass[tikz]{standalone}
\usetikzlibrary{tqft}

\begin{document}
\begin{tikzpicture}[
  tqft/.cd,
  cobordism/.style={draw},
  every upper boundary component/.style={draw},
  every lower boundary component/.style={draw},
]
  \pic [tqft/cylinder to next,anchor=incoming boundary 1,name=c];
  \pic [tqft/cylinder to prior,anchor=incoming boundary 1,
          at=(c-outgoing boundary |- c-incoming boundary)];
\end{tikzpicture}
\end{document}