Joined Cases T-401/16 and T-443/16: Judgment of the General Court of 9 September 2020 — Spain and Italy v Commission (Language regime — Notice of open competitions for the recruitment of Investigators and Team leaders — Language skills — Limitation of the choice of second language in the competitions to German, English and French — Eliminatory language-comprehension test in English — Language of communication — Regulation No 1 — Article 1d(1), Article 27 and Article 28(f) of the Staff Regulations — Discrimination based on language — Justification — Interests of the service — Proportionality)