Electron transport chain and oxidative phosphorylation 2

In substrate-level phosphorylation, the electron transport chain is involved.

In substrate-level phosphorylation, a phosphate group is transferred to $\text{ADP}$‍ from another molecule.

In oxidative phosphorylation, ${\text{FADH}}_2$‍ is involved.

This is an example of oxidative phosphorylation: $\begin{array}{rl}& \text{Phosphoenolpyruvate}+\text{ADP}\\ & \to \text{ATP}+\text{Pyruvate}\end{array}$‍