¿Es posible incluir un SVG dentro de otro?sin ¿Efectos de rasterización? He intentado esto

<svg version="1.2" width="600.0pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
 <image height="655.813953488" width="600.0" x="0" xlink:href="A.svg" y="0"/>
 <image height="740.540540541" width="600.0" x="0" xlink:href="B.svg" y="655.813953488"/>
</svg>

Que rinde una imagen compuesta deA.svg yB.svg pero pierden sus propiedades de gráficos vectoriales y se convierten en mapas de bits (probado enchrome, inkscape, inkview yeog). El svg resultante no se mostrará dentro de un navegador web, por lo que las llamadas javascript externas no son una opción. ¿Cómo puedo "incluir" un svg dentro de otro sin copiar, pegar y preservar la vectorización?

Zoom en los resultados de la imagen compuesta en cromo:

(El efecto no está presente conA.svg solo)

EDITAR: Aquí están las imágenes exactas que estoy usando para probar:

A.svg

<?xml version="1.0" encoding="UTF-8"?>
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="129pt" height="141pt" viewBox="0 0 129 141" version="1.2">
  <defs>
    <g>
      <symbol overflow="visible" id="glyph0-0">
    <path style="stroke:none;" d="M 133.296875 0 L 133.296875 -5.1875 C 122.734375 -5.1875 119.15625 -5.1875 116.5625 -12.546875 L 72.328125 -137.6875 C 71.328125 -140.265625 70.9375 -140.875 68.9375 -140.875 C 66.953125 -140.875 66.546875 -140.265625 65.546875 -137.6875 L 23.3125 -18.125 C 19.53125 -7.375 11.5625 -5.1875 4.578125 -5.1875 L 4.578125 0 C 8.171875 -0.40625 16.140625 -0.40625 19.921875 -0.40625 C 24.90625 -0.40625 32.875 -0.40625 37.65625 0 L 37.65625 -5.1875 C 28.296875 -5.578125 26.90625 -11.953125 26.90625 -14.34375 C 26.90625 -16.140625 27.296875 -17.140625 27.703125 -18.328125 L 38.25 -48.015625 L 90.453125 -48.015625 L 102.421875 -14.140625 C 103.40625 -11.75 103.40625 -11.359375 103.40625 -10.5625 C 103.40625 -5.1875 94.84375 -5.1875 91.0625 -5.1875 L 91.0625 0 C 96.828125 -0.40625 107.203125 -0.40625 113.375 -0.40625 C 118.546875 -0.40625 128.515625 -0.40625 133.296875 0 Z M 88.671875 -53.203125 L 40.046875 -53.203125 L 64.359375 -121.734375 Z M 88.671875 -53.203125 "/>
      </symbol>
    </g>
  </defs>
  <g id="surface1">
    <g style="fill:rgb(0%,0%,0%);fill-opacity:1;">
      <use xlink:href="#glyph0-0" x="-4.59" y="140.87"/>
    </g>
  </g>
</svg>

B.svg

<?xml version="1.0" encoding="UTF-8"?>
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="111pt" height="137pt" viewBox="0 0 111 137" version="1.2">
  <defs>
    <g>
      <symbol overflow="visible" id="glyph0-0">
    <path style="stroke:none;" d="M 120.9375 -36.265625 C 120.9375 -54.203125 104.609375 -69.53125 83.28125 -70.9375 C 102.421875 -74.71875 115.765625 -87.46875 115.765625 -102.609375 C 115.765625 -119.15625 99.421875 -136.09375 73.71875 -136.09375 L 10.359375 -136.09375 L 10.359375 -130.90625 C 24.109375 -130.90625 26.296875 -130.90625 26.296875 -121.9375 L 26.296875 -14.140625 C 26.296875 -5.1875 24.109375 -5.1875 10.359375 -5.1875 L 10.359375 0 L 78.90625 0 C 104.40625 0 120.9375 -18.125 120.9375 -36.265625 Z M 101.21875 -102.609375 C 101.21875 -87.46875 89.0625 -72.328125 67.546875 -72.328125 L 38.859375 -72.328125 L 38.859375 -123.140625 C 38.859375 -129.90625 39.25 -130.90625 47.21875 -130.90625 L 72.71875 -130.90625 C 92.453125 -130.90625 101.21875 -114.96875 101.21875 -102.609375 Z M 106.203125 -36.46875 C 106.203125 -21.921875 94.84375 -5.1875 73.125 -5.1875 L 47.21875 -5.1875 C 39.25 -5.1875 38.859375 -6.171875 38.859375 -12.953125 L 38.859375 -69.140625 L 75.71875 -69.140625 C 96.234375 -69.140625 106.203125 -51.015625 106.203125 -36.46875 Z M 106.203125 -36.46875 "/>
      </symbol>
    </g>
  </defs>
  <g id="surface1">
    <g style="fill:rgb(0%,0%,0%);fill-opacity:1;">
      <use xlink:href="#glyph0-0" x="-10.361" y="136.082"/>
    </g>
  </g>
</svg>