I'm not placing such limits on how Jesus makes himself known. I can say there have been reports of the thing you say can't happen, happening. Jesus will reveal himself as he sees fit. Though it would be unusual, to say the least, from where I sit and I would have a mountain of questions, there are enough reports of this happening for me to leave open the possibility.
I would not open myself up to extra biblical revelation. We are given all we need that pertains to life and Godliness in scripture.
the Apostles were promised to be guided.....into all truth.
Jesus did not forget to tell us anything. the church has believed scripture to be sufficient;
Chapter 1: Of The Holy Scriptures
1. The Holy Scripture is the only sufficient, certain, and infallible rule of all saving knowledge, faith, and obedience, although the light of nature, and the works of creation and providence do so far manifest the goodness, wisdom, and power of God, as to leave men inexcusable; yet are they not sufficient to give that knowledge of God and his will which is necessary unto salvation.
Therefore it pleased the Lord at sundry times and in divers manners to reveal himself, and to declare that his will unto his church; and afterward for the better preserving and propagating of the truth, and for the more sure establishment and comfort of the church against the corruption of the flesh, and the malice of Satan, and of the world, to commit the same wholly unto writing; which maketh the Holy Scriptures to be most necessary, those former ways of God's revealing his will unto his people being now ceased.( 2 Timothy 3:15-17; Isaiah 8:20; Luke 16:29, 31; Ephesians 2:20; Romans 1:19-21; Romans 2:14,15; Psalms 19:1-3; Hebrews 1:1; Proverbs 22:19-21; Romans 15:4; 2 Peter 1:19,20 )