The Messenger of Allah ﷺ used to observe prayers like your prayers, but he would delay the prayer after nightfall to a little after the time you observed it, and he would shorten the prayer.
كَانَ رَسُولُ اللَّهِ ﷺ يُصَلِّي الصَّلَوَاتِ نَحْوًا مِنْ صَلاَتِكُمْ وَكَانَ يُؤَخِّرُ الْعَتَمَةَ بَعْدَ صَلاَتِكُمْ شَيْئًا وَكَانَ يُخِفُّ الصَّلاَةَ وَفِي رِوَايَةِ أَبِي كَامِلٍ يُخَفِّفُ
[Machine] The Messenger of Allah ﷺ used to pray in a similar way to your prayers, and he would delay the 'Isha prayer after your prayer for a while, and he would shorten the prayer.
كَانَ رَسُولُ اللهِ ﷺ يُصَلِّي الصَّلَوَاتِ نَحْوًا مِنْ صَلَاتِكُمْ وَكَانَ يُؤَخِّرُ الْعَتَمَةَ بَعْدَ صَلَاتِكُمْ شَيْئًا وَكَانَ يُخَفِّفُ الصَّلَاةَ
[Machine] "The Messenger of Allah ﷺ used to perform the prayers in a similar manner to your prayers, but he would delay the darkness after your prayers for a while, and he used to perform the prayers with briskness."
«كَانَ رَسُولُ اللهِ ﷺ يُصَلِّي الصَّلَوَاتِ نَحْوًا مِنْ صَلَاتِكُمْ وَيُؤَخِّرُ الْعَتَمَةَ بَعْدَ صَلَاتِكُمْ شَيْئًا وَكَانَ يَخِفُّ الصَّلَاةَ»