Odoo-Build/snippets/survey.layout.set_head_title.xml

<data inherit_id="survey.layout" priority="50">
    <xpath expr="//head" position="before">
        <t t-if="survey">
            <t t-set="title" t-value="('Sozialinfo - ' + survey.title) if survey else 'Odoo'"/>
            <t t-set="x_icon" t-value="'/web/image?model=res.company&amp;id=1&amp;field=favicon'"/>
        </t>
    </xpath>
</data>