Remark 8.6.0.4. Let $U: \operatorname{\mathcal{E}}\rightarrow \operatorname{\mathcal{C}}$ be a cocartesian fibration of simplicial sets. The construction of the conjugate fibration $\operatorname{Cospan}^{\dagger }(\operatorname{\mathcal{E}}/\operatorname{\mathcal{C}}) \rightarrow \operatorname{\mathcal{C}}^{\operatorname{op}}$ studied in ยง8.6.3 appears in work of Barwick-Glasman-Nardin; see [BGN].
$\Newextarrow{\xhookrightarrow}{10,10}{0x21AA}$