Updated

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

public class Paz : MonoBehaviour
{
    [SerializeField] GameObject samPrefab;
    [SerializeField] GameObject olliePrefab;
    public Sam sam { get; private set; }
    Ollie ollie;

    private void Start()
    {
        GameObject samObject = Instantiate(samPrefab);
        GameObject ollieObject = Instantiate(olliePrefab);
        sam = samObject.GetComponent<Sam>();
        ollie = ollieObject.GetComponent<Ollie>();
        sam.Log();
        ollie.Log();
        ollie.Setup(this);
    }
}


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

public class Ollie : MonoBehaviour
{
    public int twenty = 20;

    Paz paz;
    Sam sam => paz.sam;

    void Start()
    {
    }

    public void Setup(Paz paz)
    {
        this.paz = paz;
        //sam = paz.sam;
        print($"Setup {sam.ten}");
    }


    void Update()
    {
        //print($" {sam.ten}");
    }
    public void Log()
    {
        print($"Ollie {twenty}");
    }
}