I have the following MWE:

```
\documentclass[]{beamer}
\usepackage{tikz}
\tikzset{
	% Set distances between levels and siblings
	level distance=1.5cm, % Adjusted for potentially shallow trees
	level 1/.style={sibling distance=3cm}, % Adjusted sibling distance
	level 2/.style={level distance=1.5cm, sibling distance=1.8cm},
	% Default node style
	every node/.style={font=\Large\bfseries},
	% Basic style for text inside nodes
	tnode/.style={text=blue!80!black, align=center}, % align=center can help
	% Node styles based on number of keys (no split)
	onenode/.style={tnode, circle, draw, thick, minimum size=2.5em, inner sep=1pt},
	multinode/.style={tnode, shape=rectangle, draw, thick, rounded corners, inner sep=4pt, minimum height=1.8em}, % Common style for 2/3 nodes
	twonode/.style={multinode, minimum width=4.2em}, % Adjusted width for two numbers
	threenode/.style={multinode, minimum width=6em}, % Adjusted width for three numbers
	% Default edge style
	edge from parent/.style={draw, thick},
	% Style for dummy leaves
	dummy/.style={circle, fill=black, inner sep=0pt, minimum size=6pt},
	% Style for the dummy leaf level (short edges)
	dummy level/.style={level distance=0.6cm, sibling distance=0.6cm}, % Short level distance, close siblings
	dummy edge/.style={draw, thin} % Thinner edge for dummy connections
}
\begin{document}
\begin{frame}[plain]
	\begin{tikzpicture}
	\node[onenode] {2}
	child { node[onenode] {1} % Leaf node
		child[dummy level] { node[dummy] {} edge from parent[dummy edge] }
		child[dummy level] { node[dummy] {} edge from parent[dummy edge] }
	}
	child { node[twonode] {3\ 4} % Leaf node
		child[dummy level] { node[dummy] {} edge from parent[dummy edge] }
		child[dummy level] { node[dummy] {} edge from parent[dummy edge] }
		child[dummy level] { node[dummy] {} edge from parent[dummy edge] }
	};
\end{tikzpicture}
\end{frame}
\end{document}
```

This gives:

![temp.png](/image?hash=033c62b208e1eeb8d1730ce05549f7927950f35f345e40f373723fe401ed3f01)

I would like the rightmost edges of the "3 4" node to start to the right of the 4 and the edge going into the "3 4" leaf from "2" to touch the "3 4" node exactly in the middle between the 3 and the 4. Similarly I would like the leftmost edge from that node to start to the left of the 3.  

Along the same vein, I would like the leftmost edge from the "1" node to be seen as an extension of the edge from "2" to "1". 

I have drawn an image of what I mean. For the "1" node I have drawn a straight line through it to show where its left child should be.


![Page 1.png](/image?hash=dbbbcffdd15b65a2b0a34d179e23b181c8d133f8d5af1cf505361505592160ce)


Cross-posted to https://tex.stackexchange.com/q/742082/5283