Product title split

gistfile1.txt

<div class="product__block__title" style="--PB: 16px;">
    <div class="product__headline">
        <div class="product__title__wrapper">
            <h1 class="product__title heading-size-4">

                {% assign title = product.title | split: "|" %}
                {{ title.first }}
                <br>
                {% if title.size == 2 %}
                {{ title.last }}
                {% endif %}

            </h1>
        </div>
    </div>
</div>

gistfile2.txt

            {% assign title = product.title| strip_html | escape | split: "|" %}
            {{ title.first }}
            {% if title.size == 2 %}
            <br>
            {{ title.last }}
            {% endif %}