If one finished Shmone Esrei and the Minyan was saying Aleinu, should one say Aleinu with the Minyan or go straight to Tachnun?

  Just say Tachanun.   Sources: ראה שו״ת קנה בושם … Continue reading If one finished Shmone Esrei and the Minyan was saying Aleinu, should one say Aleinu with the Minyan or go straight to Tachnun?