Complex sentence: Smith had been sent to Canada by Mulligan for a one-time appearance, however, the Tunney family were so impressed by Smith that they made him an offer to work in the Toronto wrestling territory the morning he was checking out of his hotel.
Split into simpler sentences: Smith had been sent to Canada by Mulligan for a one-time appearance. However, the Tunney family were so impressed by Smith that they made him an offer to work in the Toronto wrestling territory the morning he was checking out of his hotel.