diff --git a/packages/object/src/hashgraph/index.ts b/packages/object/src/hashgraph/index.ts
index bae345b4..15c82431 100644
--- a/packages/object/src/hashgraph/index.ts
+++ b/packages/object/src/hashgraph/index.ts
@@ -1,4 +1,3 @@
-import { doesNotMatch } from "node:assert";
 import * as crypto from "node:crypto";
 import { BitSet } from "./bitset.js";
 
@@ -179,7 +178,10 @@ export class HashGraph<T> {
 		return result;
 	}
 
-	linearizeOperations(): Operation<T>[] {
+	linearizeOperations(
+		areCausallyRelatedFn: (v1: Hash, v2: Hash) => boolean = this
+			.areCausallyRelated,
+	): Operation<T>[] {
 		const order = this.topologicalSort();
 		const result: Operation<T>[] = [];
 		let i = 0;
@@ -192,7 +194,7 @@ export class HashGraph<T> {
 			while (j < order.length) {
 				const moving = order[j];
 
-				if (!this.areCausallyRelated(anchor, moving)) {
+				if (!areCausallyRelatedFn(anchor, moving)) {
 					const v1 = this.vertices.get(anchor);
 					const v2 = this.vertices.get(moving);
 					let action: ActionType;
@@ -251,6 +253,46 @@ export class HashGraph<T> {
 		return test1 || test2;
 	}
 
+	areCausallyRelatedOld(hash1: Hash, hash2: Hash): boolean {
+		const visited = new Set<Hash>();
+		const stack = [hash1];
+
+		while (stack.length > 0) {
+			const current = stack.pop();
+			if (current === hash2) return true;
+			if (current === undefined) continue;
+			visited.add(current);
+
+			const vertex = this.vertices.get(current);
+			if (!vertex) continue;
+			for (const dep of vertex.dependencies) {
+				if (!visited.has(dep)) {
+					stack.push(dep);
+				}
+			}
+		}
+
+		visited.clear();
+		stack.push(hash2);
+
+		while (stack.length > 0) {
+			const current = stack.pop();
+			if (current === hash1) return true;
+			if (current === undefined) continue;
+			visited.add(current);
+
+			const vertex = this.vertices.get(current);
+			if (!vertex) continue;
+			for (const dep of vertex.dependencies) {
+				if (!visited.has(dep)) {
+					stack.push(dep);
+				}
+			}
+		}
+
+		return false;
+	}
+
 	// Time complexity: O(1), Space complexity: O(1)
 	getFrontier(): Hash[] {
 		return Array.from(this.frontier);