Combine meshes at one origin in Unity

Question

enter image description here I have merged two meshes into one, as shown in the image. However, I want the created mesh to have a single origin point. How can I create the combined mesh with vertices centered around one origin point? In the image, there are two points.

I have this script for combining meshes:

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Splines;

public class MeshCalculations : SingletonMonoBehaviour<MeshCalculations>
{
    public GameObject Zone01;
    public GameObject Zone02;
    public Mesh createdMesh;
    private void Update()
    {
        if (Input.GetKeyDown(KeyCode.V))
        {
            MergeMeshes();
        }
    }


    public void MergeMeshes()
    {
        // Get MeshFilters from the two GameObjects
        MeshFilter meshFilter1 = Zone01.GetComponent<MeshFilter>();
        MeshFilter meshFilter2 = Zone02.GetComponent<MeshFilter>();

        if (meshFilter1 == null || meshFilter2 == null)
        {
            Debug.LogError("One of the objects does not have a MeshFilter!");
            return;
        }

        // CombineInstance array to hold the meshes
        CombineInstance[] combine = new CombineInstance[2];

        // Add the first mesh
        combine[0].mesh = meshFilter1.sharedMesh;
        combine[0].transform = meshFilter1.transform.localToWorldMatrix;

        // Add the second mesh
        combine[1].mesh = meshFilter2.sharedMesh;
        combine[1].transform = meshFilter2.transform.localToWorldMatrix;

        // Create a new mesh
        Mesh combinedMesh = new Mesh();
        combinedMesh.CombineMeshes(combine);

        // Create a new GameObject to hold the combined mesh
        GameObject combinedObject = new GameObject("CombinedMesh");
        combinedObject.transform.position = Vector3.zero;
        combinedObject.transform.rotation = Quaternion.identity;

        // Add a MeshFilter and MeshRenderer to the new GameObject
        MeshFilter combinedMeshFilter = combinedObject.AddComponent<MeshFilter>();
        combinedMeshFilter.mesh = combinedMesh;

        MeshRenderer combinedMeshRenderer = combinedObject.AddComponent<MeshRenderer>();
        combinedMeshRenderer.sharedMaterial = Zone01.GetComponent<MeshRenderer>().sharedMaterial;
        createdMesh = combinedMesh;
    }

    
}