Tiling a Chamfered Rectangle with Two Tetraboloes

Introduction

A tetrabolo or tetratan is a plane figure formed by joining four equal isosceles right triangles at their legs or hypotenuses. Here are the 14 tetraboloes, with Erich Friedman's names:

A chamfered rectangle is a rectangular polyabolo with its corner cells clipped diagonally. To prevent cuts from meeting, I require the dimensions of the rectangle to be 3 or greater.

Here I show the minimal known chamfered rectangle that can be tiled by a pair of tetraboloes, using at least one copy of each.