Joseph Elsner did not proceed thus.

When all the people of Warsaw thought Frederick Chopin was entering on a wrong path, that his was not music at all, that he must keep to Himmel and Hummel, otherwise he would never do anything decent--the clever Pan Elsner had already very clearly perceived what a poetic kernel there was in the pale young dreamer, had long before felt very clearly that he had before him the founder of a new epoch of pianoforte-playing, and was far from laying upon him a cavesson, knowing well that such a noble thoroughbred may indeed be cautiously led, but must not be trained and fettered in the usual way if he is to conquer.
Of Chopin's studies under this master we do not know much more than of his studies under Zywny.

Both Fontana and Sowinski say that he went through a complete course of counterpoint and composition.

Elsner, in a letter written to Chopin in 1834, speaks of himself as "your teacher of harmony and counterpoint, of little merit, but fortunate." Liszt writes:-- Joseph Elsner taught Chopin those things that are most difficult to learn and most rarely known: to be exacting to one's self, and to value the advantages that are only obtained by dint of patience and labour.
What other accounts of the matter under discussion I have got from books and conversations are as general and vague as the foregoing.

I therefore shall not weary the reader with them.