Having A Talk After The Jumuah Khutbah

وَيُكْرَهُ التَّعْيِينُ ( قَوْلُهُ بِأَمْرِ الدُّنْيَا ) إمَّا بِنَهْيٍ عَنْ مُنْكَرٍ أَوْ أَمْرٍ بِمَعْرُوفٍ فَلَا وَكَذَا بِوُضُوءٍ أَوْ غُسْلٍ لَوْ ظَهَرَ أَنَّهُ مُحْدِثٌ أَوْ جُنُبٌ كَمَا مَرَّ بِخِلَافِ أَكْلٍ أَوْ شُرْبٍ حَتَّى لَوْ طَالَ الْفَصْلُ اسْتَأْنَفَ الْخُطْبَةَ كَمَا مَرَّ فَافْهَمْ ( قَوْلُهُ لِأَنَّهُمَا ) أَيْ الْخُطْبَةَ وَالصَّلَاةَ كَشَيْءٍ وَاحِدٍ لِكَوْنِهِمَا شَرْطًا وَمَشْرُوطًا (رد المحتار ص 771ج1)

خطبہ و جمعہ میں معتد بہ فصل ہوجانے سے اعادہ خطبہ ضروری ہے  – احسن الفتاوی ص۱۲۲ ج۴

Now coming to your query, having a 20 minute English lecture after the Khutbah will be considered as a lengthy delay due to which the Khutbah will have to be repeated once again before the Jumuah Salaah. We therefore suggest that the English talk is held first, followed by the Arabic Khutbah then the Salaah should be performed as practised by the Muslims here in South Africa and other parts of the world.

The other option, although it may not seem practical or commendable, is to have the talk after the Jumuah Salaah (that is after performing the Sunnah Salaah after Jumuah) if the congregation is willing to sit and listen. We generally find people in a hurry to leave after the Salaah hence we are not certain as to whether this procedure will prove successful for Germany. However, we have simply mentioned it as an alternative.