first.tex

\documentclass{standalone}
\usepackage{tikz,rxmarbles}
\usetikzlibrary[arrows,shapes,positioning,matrix,backgrounds]

\begin{document}
\begin{tikzpicture}

\matrix[row sep=0.5cm] (D)
{
  \draw [time] (0,0) -- (3,0);
  \node[complete] (0x0) at (2,0) {};

  \draw [time] (4,0) -- (7,0);
  \node[marble,circle,red] (1x0) at (5,0) {};
  \node[marble,circle,green] (2x0) at (5.6,0) {};
  \node[complete] (3x0) at (6,0) {};
  \\
  
  \node[box,minimum width=7cm] (op) {First};
  \\

  \draw [time] (0,0) -- (3,0);
  \node[error] (0x2) at (2,0) {};
  
  \draw [time] (4,0) -- (7,0);
  \node[marble,circle,red] (2x2) at (5,0) {};
  \node[complete] (3x2) at (5.4,0) {};
  \\
};

\begin{scope}[on background layer]
  \draw[dashed,gray,thick] (D.north) -- (D.south);
\end{scope}

\draw [fdash] (0x0) -- (0x0|-op.north);
\draw [fdash] (1x0) -- (1x0|-op.north);
\draw [fdash] (2x0) -- (2x0|-op.north);
\draw [fdash] (3x0) -- (3x0|-op.north);

\draw [rdash] (0x2) -- (0x2|-op.south);
\draw [rdash] (2x2) -- (2x2|-op.south);

\end{tikzpicture}
\end{document}