{{#if @user}}
  <a href={{this.userPath}} data-user-card={{@user.username}}>
    <ChatUserAvatar @user={{@user}} @avatarSize="medium" />
  </a>
  <a href={{this.userPath}} data-user-card={{@user.username}}>
    <ChatUserDisplayName @user={{@user}} />
  </a>
{{/if}}