在子图中绘制两个 tikzpicture

Question

我想在两个tikzpicture子图中分别绘制一个连接 - 在以下 MWE 中，在节点n1和之间n3。我认为我的代码很有意义：

\documentclass[a4paper, 12pt]{article}

\usepackage{subcaption}
\usepackage{tikz}

\usetikzlibrary{automata, positioning, arrows, decorations.pathreplacing, calc, chains, shapes.misc}

\begin{document}

some text some more text

\begin{figure*}

%left subfigure
\begin{subfigure}[t]{.45\textwidth}
\begin{tikzpicture}[remember picture]
\node[draw, red] (n1) at (0,0) {};  
\end{tikzpicture}
\caption{Caption A}
\end{subfigure}
%
\hfill
% right subfigure
\begin{subfigure}[t]{.45\textwidth}
\begin{tikzpicture}[remember picture]
\node[draw, red] (n2) at (0,0) {};  
\node[draw, red] (n3) at (1,1) {};  
\end{tikzpicture}
\caption{Caption B}
\end{subfigure}

\begin{tikzpicture}[overlay]
\draw[blue] (n1) -- (n2);   
\end{tikzpicture}

\caption{Some caption for A and B.}
\end{figure*}


\end{document}

然而，结果告诉我我错了（请注意最顶部的蓝线）：:)

但我不知道我做错了什么。

Answer 1

尝试这样做：

\documentclass[a4paper, 12pt]{article}

\usepackage{subcaption}
\usepackage{tikz}

\usetikzlibrary{automata, positioning, arrows, decorations.pathreplacing, calc, chains, shapes.misc}

\begin{document}

some text some more text

\begin{figure*}

%left subfigure
\begin{subfigure}[t]{.45\textwidth}
\centering
\begin{tikzpicture}[remember picture]
\node[draw, red] (n1) at (0,0) {};  
\end{tikzpicture}
\caption{Caption A}
\end{subfigure}
%
\hfill
% right subfigure
\begin{subfigure}[t]{.45\textwidth}
\centering
\begin{tikzpicture}[remember picture]
\node[draw, red] (n2) at (0,0) {};  
\node[draw, red] (n3) at (1,1) {};  
\end{tikzpicture}
\caption{Caption B}
\end{subfigure}
\begin{tikzpicture}[overlay, remember picture]
\draw[blue] (n1) -- (n2);   
\end{tikzpicture}
\caption{Some caption for A and B.}
\end{figure*}

\end{document}